added some example queries + serializations
diff --git a/src/test/resources/queries/bsp4.json b/src/test/resources/queries/bsp4.json
index e98afbd..c7ddb5b 100644
--- a/src/test/resources/queries/bsp4.json
+++ b/src/test/resources/queries/bsp4.json
@@ -1,49 +1,55 @@
 {
-   "@context":{
-      "korap":"http://korap.ids-mannheim.de/ns/query",
-      "@language":"de",
-      "operands":{
-         "@id":"korap:operands",
-         "@container":"@list"
-      },
-      "relation":{
-         "@id":"korap:relation",
-         "@type":"korap:relation#types"
-      },
-      "class":{
-         "@id":"korap:class",
-         "@type":"xsd:integer"
-      },
-      "query":"korap:query",
-      "filter":"korap:filter",
-      "meta":"korap:meta"
-   },
-   "query":{
-      "@type":"korap:sequence",
-      "shrink":"0",
-      "operands":[
-         {
-            "@type":"korap:group",
-            "class":"0",
-            "operands":[
-               {
-                  "@type":"korap:token",
-                  "@value":{
-                     "@type":"korap:term",
-                     "@value":"base:foo",
-                     "relation":"="
-                  }
-               }
-            ]
-         },
-         {
-            "@type":"korap:token",
-            "@value":{
-               "@type":"korap:term",
-               "@value":"orth:bar",
-               "relation":"="
+    "@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:sequence", 
+                "operands": [
+                    {
+                        "@type": "korap:group", 
+                        "class": "0", 
+                        "operands": [
+                            {
+                                "@type": "korap:token", 
+                                "@value": {
+                                    "@type": "korap:term", 
+                                    "@value": "base:foo", 
+                                    "relation": "="
+                                }
+                            }
+                        ]
+                    }, 
+                    {
+                        "@type": "korap:token", 
+                        "@value": {
+                            "@type": "korap:term", 
+                            "@value": "orth:bar", 
+                            "relation": "="
+                        }
+                    }
+                ]
             }
-         }
-      ]
-   }
+        ], 
+        "relation": "shrink", 
+        "shrink": "0"
+    }
 }