New feature and some bugfixes concerning span based context extension
diff --git a/src/test/resources/queries/bsp-context-sentence.jsonld b/src/test/resources/queries/bsp-context-sentence.jsonld
new file mode 100644
index 0000000..123ce0b
--- /dev/null
+++ b/src/test/resources/queries/bsp-context-sentence.jsonld
@@ -0,0 +1,28 @@
+{
+    "@context": "http://ids-mannheim.de/ns/KorAP/json-ld/v0.1/context.jsonld",
+    "query":{
+	"@type":"korap:token",
+	"wrap":{
+	    "@type":"korap:term",
+	    "foundry" : "mate",
+	    "layer":"l",
+	    "key":"wert",
+	    "match":"match:eq"
+	}
+    },
+    "collections":[
+	{
+	    "@type":"korap:meta-filter",
+	    "@value":{
+		"@type":"korap:term",
+		"@field":"korap:field#corpusID",
+		"@value":"WPD"
+	    }
+	}
+    ],
+    "meta":{
+	"startPage":1,
+	"count":25,
+	"context":"sentence"
+    }
+}