define ( 'ACTIVITY_OBJ_GROUP', NAMESPACE_ACTIVITY_SCHEMA . 'group' );
define ( 'ACTIVITY_OBJ_TAGTERM', NAMESPACE_DFRN . '/tagterm' );
define ( 'ACTIVITY_OBJ_PROFILE', NAMESPACE_DFRN . '/profile' );
+define ( 'ACTIVITY_OBJ_QUESTION', 'http://activityschema.org/object/question' );
/**
* item weight for query ordering