reset attribute slot
@@ -211,6 +211,7 @@ class ActionQueryKnowledgeBase(Action):
slots = [
SlotSet(SLOT_OBJECT_TYPE, object_type),
+ SlotSet(SLOT_ATTRIBUTE, None),
SlotSet(SLOT_MENTION, None),
SlotSet(SLOT_LAST_OBJECT, object_identifier),
SlotSet(SLOT_LAST_OBJECT_TYPE, object_type),
