diff --git a/src/main/java/de/ids_mannheim/korap/KrillCollection.java b/src/main/java/de/ids_mannheim/korap/KrillCollection.java
index a89fdfc..1edfb64 100644
--- a/src/main/java/de/ids_mannheim/korap/KrillCollection.java
+++ b/src/main/java/de/ids_mannheim/korap/KrillCollection.java
@@ -6,7 +6,7 @@
 import de.ids_mannheim.korap.*;
 import de.ids_mannheim.korap.util.KrillDate;
 import de.ids_mannheim.korap.util.QueryException;
-import de.ids_mannheim.korap.collection.BooleanFilter;
+import de.ids_mannheim.korap.collection.BooleanFilterOperation;
 import de.ids_mannheim.korap.collection.RegexFilter;
 import de.ids_mannheim.korap.collection.FilterOperation;
 import de.ids_mannheim.korap.collection.CollectionBuilder;
@@ -46,6 +46,7 @@
  * @author diewald
  */
 /*
+ * TODO: Use CachingWrapperFilter!!!
  * TODO: Clean up for new KoralQuery
  * TODO: Make a cache for the bits
  *       Delete it in case of an extension or a filter
@@ -167,15 +168,15 @@
 
 
     // Create a boolean filter from JSON
-    private BooleanFilter _fromJson (JsonNode json) throws QueryException {
+    private BooleanFilterOperation _fromJson (JsonNode json) throws QueryException {
         return this._fromJson(json, "tokens");
     };
 
 
     // Create a booleanfilter from JSON
-    private BooleanFilter _fromJson (JsonNode json, String field)
+    private BooleanFilterOperation _fromJson (JsonNode json, String field)
             throws QueryException {
-        BooleanFilter bfilter = new BooleanFilter();
+        BooleanFilterOperation bfilter = new BooleanFilterOperation();
 
         if (!json.has("@type")) {
             throw new QueryException(701,
@@ -285,7 +286,7 @@
             if (json.has("operation"))
                 operation = json.get("operation").asText();
 
-            BooleanFilter group = new BooleanFilter();
+            BooleanFilterOperation group = new BooleanFilterOperation();
 
             for (JsonNode operand : json.get("operands")) {
                 if (operation.equals("operation:and"))
@@ -307,7 +308,7 @@
             throw new QueryException(613,
                     "Collection query type has to be doc or docGroup");
 
-        // return new BooleanFilter();
+        // return new BooleanFilterOperation();
     };
 
 
@@ -352,7 +353,7 @@
         if (!json.has("@value"))
             throw new QueryException(851, "Legacy filter need @value fields");
 
-        BooleanFilter bf = this._fromJsonLegacy(json.get("@value"), "tokens");
+        BooleanFilterOperation bf = this._fromJsonLegacy(json.get("@value"), "tokens");
         String type = json.get("@type").asText();
 
         // Filter the collection
@@ -375,9 +376,9 @@
 
     // Create a boolean filter from a Json string
     @Deprecated
-    private BooleanFilter _fromJsonLegacy (JsonNode json, String field)
+    private BooleanFilterOperation _fromJsonLegacy (JsonNode json, String field)
             throws QueryException {
-        BooleanFilter bfilter = new BooleanFilter();
+        BooleanFilterOperation bfilter = new BooleanFilterOperation();
 
         if (!json.has("@type"))
             throw new QueryException(612,
@@ -412,7 +413,7 @@
             if (DEBUG)
                 log.trace("relation found {}", json.get("relation").asText());
 
-            BooleanFilter group = new BooleanFilter();
+            BooleanFilterOperation group = new BooleanFilterOperation();
 
             switch (json.get("relation").asText()) {
                 case "between":
@@ -489,7 +490,7 @@
 
 
     /**
-     * Add a filter by means of a {@link BooleanFilter}.
+     * Add a filter by means of a {@link BooleanFilterOperation}.
      * 
      * <strong>Warning</strong>: Filters are part of the collections
      * legacy API and may vanish without warning.
@@ -499,7 +500,7 @@
      * @return The {@link KrillCollection} object for chaining.
      */
     // TODO: The checks may not be necessary
-    public KrillCollection filter (BooleanFilter filter) {
+    public KrillCollection filter (BooleanFilterOperation filter) {
         if (DEBUG)
             log.trace("Added filter: {}", filter.toString());
 
@@ -535,12 +536,12 @@
      * @return The {@link KrillCollection} object for chaining.
      */
     public KrillCollection filter (CollectionBuilder filter) {
-        return this.filter(filter.getBooleanFilter());
+        return this.filter(filter.getBooleanFilterOperation());
     };
 
 
     /**
-     * Add an extension by means of a {@link BooleanFilter}.
+     * Add an extension by means of a {@link BooleanFilterOperation}.
      * 
      * <strong>Warning</strong>: Extensions are part of the
      * collections
@@ -550,7 +551,7 @@
      *            The extension to add to the collection.
      * @return The {@link KrillCollection} object for chaining.
      */
-    public KrillCollection extend (BooleanFilter extension) {
+    public KrillCollection extend (BooleanFilterOperation extension) {
         if (DEBUG)
             log.trace("Added extension: {}", extension.toString());
 
@@ -574,7 +575,7 @@
      * @return The {@link KrillCollection} object for chaining.
      */
     public KrillCollection extend (CollectionBuilder extension) {
-        return this.extend(extension.getBooleanFilter());
+        return this.extend(extension.getBooleanFilterOperation());
     };
 
 
@@ -589,7 +590,7 @@
      * @return The {@link KrillCollection} object for chaining.
      */
     public KrillCollection filterUIDs (String ... uids) {
-        BooleanFilter filter = new BooleanFilter();
+        BooleanFilterOperation filter = new BooleanFilterOperation();
         filter.or("UID", uids);
         if (DEBUG)
             log.debug("UID based filter: {}", filter.toString());
@@ -721,7 +722,7 @@
 
             FilterOperation kcInit = filters.remove(0);
             if (DEBUG)
-                log.trace("FILTER: {}", kcInit);
+                log.trace("FILTER: {}", kcInit.filter.toString());
 
             // Init vector
             DocIdSet docids = kcInit.filter.getDocIdSet(atomic, null);
@@ -734,6 +735,9 @@
                     log.trace("InitFilter has effect");
                 bitset.or(filterIter);
                 noDoc = false;
+            }
+            else if (DEBUG) {
+                log.trace("InitFilter has no effect");
             };
 
             // Apply all filters sequentially
diff --git a/src/main/java/de/ids_mannheim/korap/collection/BooleanFilter.java b/src/main/java/de/ids_mannheim/korap/collection/BooleanFilterOperation.java
similarity index 65%
rename from src/main/java/de/ids_mannheim/korap/collection/BooleanFilter.java
rename to src/main/java/de/ids_mannheim/korap/collection/BooleanFilterOperation.java
index 19693c6..f5ab6e1 100644
--- a/src/main/java/de/ids_mannheim/korap/collection/BooleanFilter.java
+++ b/src/main/java/de/ids_mannheim/korap/collection/BooleanFilterOperation.java
@@ -5,12 +5,17 @@
 import org.apache.lucene.index.Term;
 
 import org.apache.lucene.search.BooleanClause;
-import org.apache.lucene.search.BooleanQuery;
+import org.apache.lucene.queries.BooleanFilter;
+import org.apache.lucene.queries.TermFilter;
+import org.apache.lucene.queries.FilterClause;
 import org.apache.lucene.search.Query;
-import org.apache.lucene.search.TermQuery;
 import org.apache.lucene.search.RegexpQuery;
 import org.apache.lucene.search.NumericRangeQuery;
 
+// Temporary
+import org.apache.lucene.search.TermQuery;
+import org.apache.lucene.search.BooleanQuery;
+
 import de.ids_mannheim.korap.util.KrillDate;
 import de.ids_mannheim.korap.KrillCollection;
 import de.ids_mannheim.korap.util.QueryException;
@@ -20,17 +25,17 @@
 
 
 /*
-  THIS IS LIMITED TO PUBDATE AT THE MOMENT AND COMPLETELY LEGACY!
-*/
+ * THIS IS LIMITED TO PUBDATE AT THE MOMENT AND COMPLETELY LEGACY!
+ */
 
 /**
  * @author Nils Diewald
  * 
- *         BooleanFilter implements a simple API for boolean
+ *         BooleanFilterOperation implements a simple API for boolean
  *         operations
  *         on constraints for KorapFilter.
  */
-public class BooleanFilter {
+public class BooleanFilterOperation {
     private String type;
 
     // Logger
@@ -40,107 +45,107 @@
     // This advices the java compiler to ignore all loggings
     public static final boolean DEBUG = false;
 
-    private BooleanQuery bool;
+    private BooleanFilter bool;
     private String error;
 
 
-    public BooleanFilter () {
-        bool = new BooleanQuery();
+    public BooleanFilterOperation () {
+        bool = new BooleanFilter();
     };
 
 
-    public BooleanFilter or (String type, String ... terms) {
+    public BooleanFilterOperation or (String type, String ... terms) {
         for (String term : terms) {
 
             if (DEBUG)
                 log.trace("Filter: OR {}={}", type, term);
 
-            bool.add(new TermQuery(new Term(type, term)),
+            bool.add(new TermFilter(new Term(type, term)),
                     BooleanClause.Occur.SHOULD);
         };
         return this;
     };
 
 
-    public BooleanFilter or (String type, RegexFilter value) {
-        bool.add(value.toQuery(type), BooleanClause.Occur.SHOULD);
+    public BooleanFilterOperation or (String type, RegexFilter value) {
+        bool.add(value.toFilter(type), BooleanClause.Occur.SHOULD);
         return this;
     };
 
 
-    public BooleanFilter or (BooleanFilter bf) {
+    public BooleanFilterOperation or (BooleanFilterOperation bf) {
         if (bf.bool.clauses().size() == 1) {
-            BooleanClause bc = bf.bool.getClauses()[0];
+            FilterClause bc = bf.bool.clauses().get(0);
             bc.setOccur(BooleanClause.Occur.SHOULD);
             bool.add(bc);
             return this;
         }
-        bool.add(bf.toQuery(), BooleanClause.Occur.SHOULD);
+        bool.add(bf.toFilter(), BooleanClause.Occur.SHOULD);
         return this;
     };
 
 
-    public BooleanFilter or (NumericRangeQuery<Integer> nrq) {
+    public BooleanFilterOperation or (NumericRangeQuery<Integer> nrq) {
         bool.add(nrq, BooleanClause.Occur.SHOULD);
         return this;
     };
 
 
-    public BooleanFilter and (String type, String ... terms) {
+    public BooleanFilterOperation and (String type, String ... terms) {
         for (String term : terms) {
-            bool.add(new TermQuery(new Term(type, term)),
+            bool.add(new TermFilter(new Term(type, term)),
                     BooleanClause.Occur.MUST);
         };
         return this;
     };
 
 
-    public BooleanFilter and (String type, RegexFilter value) {
-        bool.add(value.toQuery(type), BooleanClause.Occur.MUST);
+    public BooleanFilterOperation and (String type, RegexFilter value) {
+        bool.add(value.toFilter(type), BooleanClause.Occur.MUST);
         return this;
     };
 
 
-    public BooleanFilter and (BooleanFilter bf) {
+    public BooleanFilterOperation and (BooleanFilterOperation bf) {
         if (bf.bool.clauses().size() == 1) {
-            BooleanClause bc = bf.bool.getClauses()[0];
+            FilterClause bc = bf.bool.clauses().get(0);
             bc.setOccur(BooleanClause.Occur.MUST);
             bool.add(bc);
             return this;
         }
-        bool.add(bf.toQuery(), BooleanClause.Occur.MUST);
+        bool.add(bf.toFilter(), BooleanClause.Occur.MUST);
         return this;
     };
 
 
-    public BooleanFilter andNot (String type, String ... terms) {
+    public BooleanFilterOperation andNot (String type, String ... terms) {
         for (String term : terms) {
-            bool.add(new TermQuery(new Term(type, term)),
+            bool.add(new TermFilter(new Term(type, term)),
                     BooleanClause.Occur.MUST_NOT);
         };
         return this;
     };
 
 
-    public BooleanFilter andNot (String type, RegexFilter value) {
-        bool.add(value.toQuery(type), BooleanClause.Occur.MUST_NOT);
+    public BooleanFilterOperation andNot (String type, RegexFilter value) {
+        bool.add(value.toFilter(type), BooleanClause.Occur.MUST_NOT);
         return this;
     };
 
 
-    public BooleanFilter andNot (BooleanFilter bf) {
+    public BooleanFilterOperation andNot (BooleanFilterOperation bf) {
         if (bf.bool.clauses().size() == 1) {
-            BooleanClause bc = bf.bool.getClauses()[0];
+            FilterClause bc = bf.bool.clauses().get(0);
             bc.setOccur(BooleanClause.Occur.MUST_NOT);
             bool.add(bc);
             return this;
         }
-        bool.add(bf.toQuery(), BooleanClause.Occur.MUST_NOT);
+        bool.add(bf.toFilter(), BooleanClause.Occur.MUST_NOT);
         return this;
     };
 
 
-    public BooleanFilter since (String dateStr) {
+    public BooleanFilterOperation since (String dateStr) {
         int since = new KrillDate(dateStr).floor();
 
         if (since == 0 || since == KrillDate.BEGINNING)
@@ -153,7 +158,7 @@
     };
 
 
-    public BooleanFilter till (String dateStr) {
+    public BooleanFilterOperation till (String dateStr) {
         try {
             int till = new KrillDate(dateStr).ceil();
             if (till == 0 || till == KrillDate.END)
@@ -170,7 +175,7 @@
     };
 
 
-    public BooleanFilter between (String beginStr, String endStr) {
+    public BooleanFilterOperation between (String beginStr, String endStr) {
         KrillDate beginDF = new KrillDate(beginStr);
 
         int begin = beginDF.floor();
@@ -194,7 +199,7 @@
     };
 
 
-    public BooleanFilter date (String dateStr) {
+    public BooleanFilterOperation date (String dateStr) {
         KrillDate dateDF = new KrillDate(dateStr);
 
         if (dateDF.year == 0)
@@ -217,11 +222,14 @@
         return this;
     };
 
-
+    @Deprecated
     public Query toQuery () {
         return this.bool;
     };
 
+    public Query toFilter () {
+        return this.bool;
+    };
 
     public String toString () {
         return this.bool.toString();
diff --git a/src/main/java/de/ids_mannheim/korap/collection/CollectionBuilder.java b/src/main/java/de/ids_mannheim/korap/collection/CollectionBuilder.java
index 809165f..6ee2119 100644
--- a/src/main/java/de/ids_mannheim/korap/collection/CollectionBuilder.java
+++ b/src/main/java/de/ids_mannheim/korap/collection/CollectionBuilder.java
@@ -1,6 +1,6 @@
 package de.ids_mannheim.korap.collection;
 
-import de.ids_mannheim.korap.collection.BooleanFilter;
+import de.ids_mannheim.korap.collection.BooleanFilterOperation;
 import de.ids_mannheim.korap.collection.RegexFilter;
 import de.ids_mannheim.korap.util.QueryException;
 import de.ids_mannheim.korap.util.KrillDate;
@@ -27,7 +27,7 @@
  * Todo: Supports foundries
  */
 public class CollectionBuilder {
-    private BooleanFilter filter;
+    private BooleanFilterOperation filter;
     private String field = "tokens";
 
     // Logger
@@ -42,61 +42,61 @@
      * Construct a new CollectionBuilder object.
      */
     public CollectionBuilder () {
-        filter = new BooleanFilter();
+        filter = new BooleanFilterOperation();
     };
 
 
-    public BooleanFilter and (String type, String ... terms) {
-        BooleanFilter bf = new BooleanFilter();
+    public BooleanFilterOperation and (String type, String ... terms) {
+        BooleanFilterOperation bf = new BooleanFilterOperation();
         bf.and(type, terms);
         return bf;
     };
 
 
-    public BooleanFilter or (String type, String ... terms) {
-        BooleanFilter bf = new BooleanFilter();
+    public BooleanFilterOperation or (String type, String ... terms) {
+        BooleanFilterOperation bf = new BooleanFilterOperation();
         bf.or(type, terms);
         return bf;
     };
 
 
-    public BooleanFilter and (String type, RegexFilter re) {
-        BooleanFilter bf = new BooleanFilter();
+    public BooleanFilterOperation and (String type, RegexFilter re) {
+        BooleanFilterOperation bf = new BooleanFilterOperation();
         bf.and(type, re);
         return bf;
     };
 
 
-    public BooleanFilter or (String type, RegexFilter re) {
-        BooleanFilter bf = new BooleanFilter();
+    public BooleanFilterOperation or (String type, RegexFilter re) {
+        BooleanFilterOperation bf = new BooleanFilterOperation();
         bf.or(type, re);
         return bf;
     };
 
 
-    public BooleanFilter since (String date) {
-        BooleanFilter bf = new BooleanFilter();
+    public BooleanFilterOperation since (String date) {
+        BooleanFilterOperation bf = new BooleanFilterOperation();
         bf.since(date);
         return bf;
     };
 
 
-    public BooleanFilter till (String date) {
-        BooleanFilter bf = new BooleanFilter();
+    public BooleanFilterOperation till (String date) {
+        BooleanFilterOperation bf = new BooleanFilterOperation();
         bf.till(date);
         return bf;
     };
 
 
-    public BooleanFilter date (String date) {
-        BooleanFilter bf = new BooleanFilter();
+    public BooleanFilterOperation date (String date) {
+        BooleanFilterOperation bf = new BooleanFilterOperation();
         bf.date(date);
         return bf;
     };
 
 
-    public BooleanFilter between (String date1, String date2) {
-        BooleanFilter bf = new BooleanFilter();
+    public BooleanFilterOperation between (String date1, String date2) {
+        BooleanFilterOperation bf = new BooleanFilterOperation();
         bf.between(date1, date2);
         return bf;
     };
@@ -107,12 +107,12 @@
     };
 
 
-    public BooleanFilter getBooleanFilter () {
+    public BooleanFilterOperation getBooleanFilterOperation () {
         return this.filter;
     };
 
 
-    public void setBooleanFilter (BooleanFilter bf) {
+    public void setBooleanFilterOperation (BooleanFilterOperation bf) {
         this.filter = bf;
     };
 
diff --git a/src/main/java/de/ids_mannheim/korap/collection/RegexFilter.java b/src/main/java/de/ids_mannheim/korap/collection/RegexFilter.java
index c948dab..781360a 100644
--- a/src/main/java/de/ids_mannheim/korap/collection/RegexFilter.java
+++ b/src/main/java/de/ids_mannheim/korap/collection/RegexFilter.java
@@ -4,6 +4,8 @@
 
 import org.apache.lucene.search.RegexpQuery;
 import org.apache.lucene.index.Term;
+import org.apache.lucene.search.QueryWrapperFilter;
+import org.apache.lucene.search.Filter;
 
 /**
  * @author Nils Diewald
@@ -21,8 +23,15 @@
         this.regex = regex;
     };
 
-
+    @Deprecated
     public RegexpQuery toQuery (String field) {
         return new RegexpQuery(new Term(field, this.regex));
     };
+
+    public Filter toFilter (String field) {
+        return new QueryWrapperFilter(
+            new RegexpQuery(new Term(field, this.regex))
+        );
+    };
+
 };
diff --git a/src/main/resources/log4j.properties b/src/main/resources/log4j.properties
index 5fed33b..eacf929 100644
--- a/src/main/resources/log4j.properties
+++ b/src/main/resources/log4j.properties
@@ -1,4 +1,4 @@
-log4j.rootLogger = ERROR, stdout
+# log4j.rootLogger = ERROR, stdout
 
 # Queries:
 # log4j.logger.de.ids_mannheim.korap.query.SpanNextQuery = TRACE, stdout
@@ -21,7 +21,7 @@
 
 # Collections:
 # log4j.logger.de.ids_mannheim.korap.collection.Filter = TRACE, stdout
-# log4j.logger.de.ids_mannheim.korap.KrillCollection = TRACE, stdout
+log4j.logger.de.ids_mannheim.korap.KrillCollection = TRACE, stdout
 
 # Responses:
 # log4j.logger.de.ids_mannheim.korap.server.Node = TRACE, stdout
diff --git a/src/test/java/de/ids_mannheim/korap/benchmark/TestBenchmarkSpans.java b/src/test/java/de/ids_mannheim/korap/benchmark/TestBenchmarkSpans.java
index 4f7ba16..922792e 100644
--- a/src/test/java/de/ids_mannheim/korap/benchmark/TestBenchmarkSpans.java
+++ b/src/test/java/de/ids_mannheim/korap/benchmark/TestBenchmarkSpans.java
@@ -11,7 +11,6 @@
 import de.ids_mannheim.korap.KrillQuery;
 import de.ids_mannheim.korap.query.QueryBuilder;
 import org.apache.lucene.store.MMapDirectory;
-import de.ids_mannheim.korap.collection.BooleanFilter;
 import org.apache.lucene.search.spans.SpanQuery;
 import de.ids_mannheim.korap.query.wrap.SpanQueryWrapper;
 import de.ids_mannheim.korap.util.QueryException;
diff --git a/src/test/java/de/ids_mannheim/korap/collection/TestKrillCollectionJSON.java b/src/test/java/de/ids_mannheim/korap/collection/TestKrillCollectionJSON.java
index cbc60bc..df70026 100644
--- a/src/test/java/de/ids_mannheim/korap/collection/TestKrillCollectionJSON.java
+++ b/src/test/java/de/ids_mannheim/korap/collection/TestKrillCollectionJSON.java
@@ -127,6 +127,7 @@
         };
         ki.commit();
 
+        // No collection
         Krill krill = new Krill(_getJSONString("collection_6.jsonld"));
         Result kr = krill.apply(ki);
         assertEquals(kr.getTotalResults(), 86);
@@ -135,6 +136,7 @@
         JsonNode res = mapper.readTree(kr.toJsonString());
         assertTrue(res.at("/collection").isMissingNode());
 
+        // textClass = reisen
         krill = new Krill(_getJSONString("collection_6_withCollection.jsonld"));
 
         kr = krill.apply(ki);
@@ -145,7 +147,13 @@
         assertEquals("koral:doc", res.at("/collection/@type").asText());
         assertEquals("textClass", res.at("/collection/key").asText());
         assertEquals("reisen", res.at("/collection/value").asText());
-        assertEquals("match:eq", res.at("/collection/match").asText());
+        assertEquals("match:contains", res.at("/collection/match").asText());
+
+        // textClass = reisen
+        krill = new Krill(_getJSONString("collection_6_withNegativeCollection.jsonld"));
+
+        kr = krill.apply(ki);
+        assertEquals(86 - 57, kr.getTotalResults());
     };
 
 
diff --git a/src/test/java/de/ids_mannheim/korap/collection/TestKrillCollectionLegacy.java b/src/test/java/de/ids_mannheim/korap/collection/TestKrillCollectionLegacy.java
index 8341c1c..f38d8bb 100644
--- a/src/test/java/de/ids_mannheim/korap/collection/TestKrillCollectionLegacy.java
+++ b/src/test/java/de/ids_mannheim/korap/collection/TestKrillCollectionLegacy.java
@@ -8,7 +8,7 @@
 import de.ids_mannheim.korap.response.Result;
 import de.ids_mannheim.korap.KrillQuery;
 import de.ids_mannheim.korap.query.QueryBuilder;
-import de.ids_mannheim.korap.collection.BooleanFilter;
+import de.ids_mannheim.korap.collection.BooleanFilterOperation;
 
 import org.apache.lucene.index.Term;
 import org.apache.lucene.search.spans.SpanOrQuery;
diff --git a/src/test/java/de/ids_mannheim/korap/index/TestWPDIndex.java b/src/test/java/de/ids_mannheim/korap/index/TestWPDIndex.java
index 1b1ef4d..d5f823c 100644
--- a/src/test/java/de/ids_mannheim/korap/index/TestWPDIndex.java
+++ b/src/test/java/de/ids_mannheim/korap/index/TestWPDIndex.java
@@ -18,7 +18,7 @@
 import de.ids_mannheim.korap.response.Match;
 import de.ids_mannheim.korap.response.Result;
 import de.ids_mannheim.korap.Krill;
-import de.ids_mannheim.korap.collection.BooleanFilter;
+import de.ids_mannheim.korap.collection.BooleanFilterOperation;
 import de.ids_mannheim.korap.query.DistanceConstraint;
 import de.ids_mannheim.korap.query.SpanDistanceQuery;
 import de.ids_mannheim.korap.query.SpanElementQuery;
@@ -167,7 +167,7 @@
         //0.8s
 
         // Check if it includes some results
-        BooleanFilter bf = new BooleanFilter();
+        BooleanFilterOperation bf = new BooleanFilterOperation();
         bf.or("ID", "WPD_BBB.04463", "WPD_III.00758");
         KrillCollection kc = new KrillCollection();
         kc.filter(bf);
diff --git a/src/test/resources/queries/collections/collection_6_withCollection.jsonld b/src/test/resources/queries/collections/collection_6_withCollection.jsonld
index 91d960a..f3edb11 100644
--- a/src/test/resources/queries/collections/collection_6_withCollection.jsonld
+++ b/src/test/resources/queries/collections/collection_6_withCollection.jsonld
@@ -7,7 +7,7 @@
     "@type":"koral:doc",
     "key":"textClass",
     "value":"reisen",
-    "match":"match:eq"
+    "match":"match:contains"
   },
   "query":{
     "@type":"koral:token",
diff --git a/src/test/resources/queries/collections/collection_6_withNegativeCollection.jsonld b/src/test/resources/queries/collections/collection_6_withNegativeCollection.jsonld
new file mode 100644
index 0000000..ba2347f
--- /dev/null
+++ b/src/test/resources/queries/collections/collection_6_withNegativeCollection.jsonld
@@ -0,0 +1,25 @@
+{
+  "@context":"http://korap.ids-mannheim.de/ns/koral/0.3/context.jsonld",
+  "errors":[],
+  "warnings":[],
+  "messages":[],
+  "collection":{
+    "@type":"koral:doc",
+    "key":"textClass",
+    "value":"reisen",
+    "match":"match:containsnot"
+  },
+  "query":{
+    "@type":"koral:token",
+    "wrap":{
+      "@type":"koral:term",
+      "layer":"orth",
+      "key":"der",
+      "match":"match:eq",
+      "foundry":"opennlp"
+    }
+  },
+  "meta":{
+    "cutOff":null
+  }
+}