Added DeleteMessage to type check sparql query.
@@ -22,6 +22,7 @@ ASK
?subj msg:hasMessageType ?type
FILTER (?type != msg:CreateMessage && ?type != msg:ConnectMessage
&& ?type != msg:CloseMessage && ?type != msg:ConnectionMessage && ?type != msg:HintMessage
+ && ?type != msg:DeleteMessage
&& ?type != msg:FailureResponse && ?type != msg:SuccessResponse
&& ?type != msg:ActivateMessage && ?type != msg:DeactivateMessage
&& ?type != msg:OpenMessage && ?type != msg:HintFeedbackMessage
