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.

[EX Q]: Questions: ['what did did canada join nato?', 'what yer did canada join nato?', 'what year did canadians join nato?']
[EX A]: 1949

[EX Q]: Questions: ['anastasia of sirmium when is her feast day?']
[EX A]: xxxx-12-22

[EX Q]: Questions: ['what was the age of alexander gramhem bell when he died?', 'what age did alexander graham ball die at?']
[EX A]:
75 years