Resolve an issue with the changes made on the SANSA semantic-based query engine

Author: GezimSejdiu

sansa-examples-spark/src/main/scala/net/sansa_stack/examples/spark/query/Semantic.scala

@@ -59,6 +59,7 @@ object Semantic {
     println("----------------------")
 
     val qs = new QuerySystem(
+      symbol = Symbols.symbol,
       partitionData,
       input,
       output,