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:`.

Let me give you an example: CONTEXT: I think it's deliberately ambiguous. If it's real, the inconsistencies are easily explained by Vidal's fascist belief system. These elements simply are not part of his world. If it's fantasy, then of course only Ofelia can see these thing because she imagined them. I think part of Del Toro's purpose in the film was to maintain the plausibility of both of these interpretations. <sep> Q: Is Ofelia just dreaming things to get herself in a fairy world? A: If it's fantasy, then of course only Ofelia can see these thing because she imagined them  Q: Are the things happening for real but visible only to Ofelia? A: If it's real, the inconsistencies are easily explained by Vidal's fascist belief system. These elements simply are not part of his world  <sep> FOLLOWUP_Q: When Vidal pulls the mandrake root out of Ofelia's mother's bed, is it just a normal root?
The answer to this example can be: No
Here is why: The answer is not mentioned in the text. Hence not answerable.

OK. solve this:
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?
Answer:
Yes