Given a question and its paraphrases, answer the question. The answer should exactly answer all the questions given without any ambiguity. Don't give partial answers.

Example Input: Questions: ['in what year did canada join the united nations?', 'what did canada join the united nations?', 'what year did canada join the united nations?']
Example Output: 1945-10-24

Example Input: Questions: ['what year did berlie doherty write street child?', 'when did berlie dorhety write street child?']
Example Output: 1993

Example Input: Questions: ['what year did the first computer virus occur?']
Example Output:
1971