ElementAttributeQuery for Cosmas ELEM function
diff --git a/src/main/java/de/ids_mannheim/korap/query/spans/SimpleSpans.java b/src/main/java/de/ids_mannheim/korap/query/spans/SimpleSpans.java
index 350d00e..ebc14a1 100644
--- a/src/main/java/de/ids_mannheim/korap/query/spans/SimpleSpans.java
+++ b/src/main/java/de/ids_mannheim/korap/query/spans/SimpleSpans.java
@@ -30,7 +30,7 @@
 	protected Spans firstSpans, secondSpans;
 	
 	protected int matchDocNumber, matchStartPosition, matchEndPosition;	
-	protected List<byte[]> matchPayload;	
+	protected Collection<byte[]> matchPayload;	
       
     public SimpleSpans (SimpleSpanQuery simpleSpanQuery,
 			AtomicReaderContext context,
@@ -43,7 +43,7 @@
   		matchDocNumber= -1;
   		matchStartPosition= -1;
   		matchEndPosition= -1;
-  		matchPayload = new LinkedList<byte[]>();
+  		matchPayload = new LinkedList<byte[]>(); // why linkedlist?
   		
   		// Get the enumeration of the two spans to match
   		firstSpans = simpleSpanQuery.getFirstClause().