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: ['when was first skyscraper built in chicago?']
[EX A]: 1885

[EX Q]: Questions: ['when is justin biebers birthday?']
[EX A]: 1994-03-01

[EX Q]: Questions: ['what year did the band u2 release their first record?', 'when did u2 release there first album?']
[EX A]:
1980