Thanks alot you guys. I finally resolved my issue. I am now creating a daemon application for viewing my feeds GUI. But i am having performance issues in GUI opening as it is taking long time. Can someone help me how can i resolve it. I am getting a lot of below output when my GUI is opening

libqtcontacts-tracker: engine.cpp:1591: Not cleaning up obsolete resources for nao:hasTag property since the property's range is too generic (rdfs:Resource).
libqtcontacts-tracker: engine.cpp:1591: Not cleaning up obsolete resources for nao:hasTag property since the property's range is too generic (rdfs:Resource).
libqtcontacts-tracker: engine.cpp:1591: Not cleaning up obsolete resources for nao:hasTag property since the property's range is too generic (rdfs:Resource).
libqtcontacts-tracker: engine.cpp:1591: Not cleaning up obsolete resources for nao:hasTag property since the property's range is too generic (rdfs:Resource).