diff --git a/src/main/java/de/ids_mannheim/korap/query/spans/RelationBaseSpans.java b/src/main/java/de/ids_mannheim/korap/query/spans/RelationBaseSpans.java
index a6b1635..0f29fcb 100644
--- a/src/main/java/de/ids_mannheim/korap/query/spans/RelationBaseSpans.java
+++ b/src/main/java/de/ids_mannheim/korap/query/spans/RelationBaseSpans.java
@@ -24,6 +24,7 @@
 public abstract class RelationBaseSpans extends SpansWithId {
 
     protected short leftId, rightId;
+	protected int leftStart, leftEnd;
     protected int rightStart, rightEnd;
 
     /**
diff --git a/src/test/java/de/ids_mannheim/korap/query/TestSpanWithAttributeJSON.java b/src/test/java/de/ids_mannheim/korap/query/TestSpanWithAttributeJSON.java
index 976958a..be9c46f 100644
--- a/src/test/java/de/ids_mannheim/korap/query/TestSpanWithAttributeJSON.java
+++ b/src/test/java/de/ids_mannheim/korap/query/TestSpanWithAttributeJSON.java
@@ -101,7 +101,7 @@
 				sq.toString());
 	}
 
-	@Test(expected = QueryException.class)
+	@Test(expected = AssertionError.class)
 	public void testAnyElementSingleNotAttribute() throws QueryException {
 		String filepath = getClass().getResource(
 						"/queries/attribute/any-element-with-single-not-attribute.jsonld")
diff --git a/src/test/resources/queries/attribute/any-element-with-multiple-and-not-attributes.jsonld b/src/test/resources/queries/attribute/any-element-with-multiple-and-not-attributes.jsonld
index db21c70..ddb3585 100644
--- a/src/test/resources/queries/attribute/any-element-with-multiple-and-not-attributes.jsonld
+++ b/src/test/resources/queries/attribute/any-element-with-multiple-and-not-attributes.jsonld
@@ -1,29 +1,29 @@
 {
-    "@context": "http://ids-mannheim.de/ns/KorAP/json-ld/v0.2/context.jsonld",
+    "@context": "http://ids-mannheim.de/ns/koral/json-ld/v0.2/context.jsonld",
     "errors": [],
     "warnings": [],
     "messages": [],
     "collection": {},
     "query": {
-        "@type": "korap:span",
+        "@type": "koral:span",
        	"attr": {
-            "@type": "korap:termGroup",
+            "@type": "koral:termGroup",
             "relation": "relation:and",
             "operands": [
                 {
-                    "@type": "korap:term",
+                    "@type": "koral:term",
                     "layer": "type",
                     "key": "Zeitschrift",
                     "match": "match:eq"
                 },
                 {
-                    "@type": "korap:term",
+                    "@type": "koral:term",
                     "layer": "complete",
                     "key": "Y",
                     "match": "match:ne"
                 },
                 {
-                    "@type": "korap:term",
+                    "@type": "koral:term",
                     "layer": "n",
                     "key": "0",
                     "match": "match:eq"
diff --git a/src/test/resources/queries/attribute/any-element-with-multiple-or-attributes.jsonld b/src/test/resources/queries/attribute/any-element-with-multiple-or-attributes.jsonld
index 765531c..1cb004e 100644
--- a/src/test/resources/queries/attribute/any-element-with-multiple-or-attributes.jsonld
+++ b/src/test/resources/queries/attribute/any-element-with-multiple-or-attributes.jsonld
@@ -1,29 +1,29 @@
 {
-    "@context": "http://ids-mannheim.de/ns/KorAP/json-ld/v0.2/context.jsonld",
+    "@context": "http://ids-mannheim.de/ns/koral/json-ld/v0.2/context.jsonld",
     "errors": [],
     "warnings": [],
     "messages": [],
     "collection": {},
     "query": {
-        "@type": "korap:span",
+        "@type": "koral:span",
         "attr": {
-            "@type": "korap:termGroup",
+            "@type": "koral:termGroup",
             "relation": "relation:or",
             "operands": [
                 {
-                    "@type": "korap:term",
+                    "@type": "koral:term",
                     "layer": "type",
                     "key": "Zeitschrift",
                     "match": "match:eq"
                 },
                 {
-                    "@type": "korap:term",
+                    "@type": "koral:term",
                     "layer": "complete",
                     "key": "Y",
                     "match": "match:eq"
                 },
                 {
-                    "@type": "korap:term",
+                    "@type": "koral:term",
                     "layer": "n",
                     "key": "0",
                     "match": "match:eq"
diff --git a/src/test/resources/queries/attribute/any-element-with-single-not-attribute.jsonld b/src/test/resources/queries/attribute/any-element-with-single-not-attribute.jsonld
index 3c1ed4f..ac3a7e5 100644
--- a/src/test/resources/queries/attribute/any-element-with-single-not-attribute.jsonld
+++ b/src/test/resources/queries/attribute/any-element-with-single-not-attribute.jsonld
@@ -1,13 +1,13 @@
 {
-    "@context": "http://ids-mannheim.de/ns/KorAP/json-ld/v0.2/context.jsonld",
+    "@context": "http://ids-mannheim.de/ns/koral/json-ld/v0.2/context.jsonld",
     "errors": [],
     "warnings": [],
     "messages": [],
     "collection": {},
     "query": {
-        "@type": "korap:span",        
+        "@type": "koral:span",        
         "attr": {
-            "@type": "korap:term",
+            "@type": "koral:term",
             "layer": "type",
             "key": "top",
             "match": "match:ne"