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 is the population of erie county in new york state?']
[EX A]: 919,866

[EX Q]: Questions: ['when did neil armsrtongs first step on the moon?', 'what date did in 1969 did neil armstrong took humans first step on the moon?']
[EX A]: 1969-07-20

[EX Q]: Questions: ['what was the year the first computer virus invented?', 'when did the computer virus first appear?']
[EX A]:
1986