Definition: Given a paragraph about cooking, and a set of conversational questions and answers about the paragraph, say whether the passage contains sufficient information to answer the follow-up question. Say Yes if it is answerable; otherwise, say No. The paragraph has the prefix 'CONTEXT:'. Each conversation question has a prefix `Q:` followed by the answer prefix `A:`, and the follow-up question has a prefix `FOLLOWUP_Q:`.
Input: CONTEXT: If a lid doesn't have a vent and the pot does not have any sort of locking mechanism like a pressure cooker, then the pressure of the steam inside will lift the lid off the pot and steam will escape. That was the "dancing" of the lid that you experienced. Venting holes in a lid just let some steam escape so the lid doesn't bang around, having a vent hole or not wouldn't make your idli's sticky.  <sep>  Q: When lids have a space that you can open slightly on top is that for steaming? A: If a lid doesn't have a vent and the pot does not have any sort of locking mechanism like a pressure cooker  <sep> FOLLOWUP_Q: Do they need to have both, a cover vent and locking mechanism, for it to be done properly?

Yes