Unfortunately, if it's in context then it can stay tethered to the subject. Asking it not to pay attention to a subject, doesn't remove attention from it, and

Unfortunately, if it's in context then it can stay tethered to the subject. Asking it not to pay attention to a subject, doesn't remove attention from it, and probably actually reinforces it. If you use the API playground, you can edit out dead ends and other subjects you don't want addressed anymore in the conversation.