Deserialization of new json-ld format
diff --git a/src/test/resources/queries/bsp4.json b/src/test/resources/queries/bsp4.json
index c7ddb5b..138bdd4 100644
--- a/src/test/resources/queries/bsp4.json
+++ b/src/test/resources/queries/bsp4.json
@@ -26,7 +26,7 @@
                 "operands": [
                     {
                         "@type": "korap:group", 
-                        "class": "0", 
+                        "class": 0, 
                         "operands": [
                             {
                                 "@type": "korap:token",