added some example queries + serializations
diff --git a/src/test/resources/queries/bsp13.json b/src/test/resources/queries/bsp13.json
new file mode 100644
index 0000000..81a6255
--- /dev/null
+++ b/src/test/resources/queries/bsp13.json
@@ -0,0 +1,40 @@
+{
+    "@context": {
+        "@language": "de", 
+        "class": {
+            "@id": "korap:class", 
+            "@type": "xsd:integer"
+        }, 
+        "filter": "korap:filter", 
+        "korap": "http://korap.ids-mannheim.de/ns/query", 
+        "meta": "korap:meta", 
+        "operands": {
+            "@container": "@list", 
+            "@id": "korap:operands"
+        }, 
+        "query": "korap:query", 
+        "relation": {
+            "@id": "korap:relation", 
+            "@type": "korap:relation#types"
+        }
+    }, 
+    "query": {
+        "@type": "korap:group", 
+        "operands": [
+            {
+                "@type": "korap:element", 
+                "@value": "np"
+            }, 
+            {
+                "@type": "korap:token", 
+                "@value": {
+                    "@type": "korap:term", 
+                    "@value": "pos:Det", 
+                    "relation": "!="
+                }
+            }
+        ], 
+        "position": "startswith", 
+        "relation": "position"
+    }
+}