Do not pass broken queries to Krill

Change-Id: I7f6d6f949ad4b4cc4ce1febf523cedb982bec45f
diff --git a/core/pom.xml b/core/pom.xml
index 3e09cee..2525eff 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -223,7 +223,7 @@
 		<dependency>
 			<groupId>de.ids_mannheim.korap</groupId>
 			<artifactId>Koral</artifactId>
-			<version>0.28</version>
+			<version>0.29</version>
 			<exclusions>
 				<exclusion>
 					<groupId>org.eclipse.jetty</groupId>