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 Input:
Questions: ['when did alexander graham bell die?', 'what age did alex graham bell die?', 'what age did the inventor alexander graham bell die?', 'what age was alexander graham bell when he passed away?']

Ex Output:
75 years


Ex Input:
Questions: ['what age did anna frank die at?', 'at what age did anne frank die?']

Ex Output:
16 years


Ex Input:
Questions: ["what is chris brown's last name?"]

Ex Output:

brown