Definition: Given a paragraph about movies 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: While we will never know as neither boat used their detonator, I would suggest that they had each others, going purely on what was shown and what the film makers were trying to say. The Joker's previous 'gag' - which also failed - was to try and get Gothamites to kill each other for own protection or self interest as he believed it would demonstrate a general moral bankruptcy. 'You failed to kill the lawyer...' - I cannot remember how the rest of the line goes but the boat finale appears to come from a desire to repeat the exercise and Batman puts the emphasis on all of this in his final rebuke. The film also goes a long way to show that both sets of passengers specifically reject the opportunity to kill each other - even for self defence. If a comic source for this plot line does actually show this as a double - bluff then it is still irrelevant to what was actually said and shown in 'The Dark Knight'.  <sep>  Q: What did the Joker's detonators actually target? A: we will never know as neither boat used their detonator  <sep> FOLLOWUP_Q: Were the detonators for their own boat of the other boat?

Yes