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.

Questions: ['what day was barrack obama elected president?']
2008-11-04

Questions: ['when is prince royce birthday?', 'what is the birth date of prince royce?', 'when was prince royce born?']
1989-05-11

Questions: ['who were alexander graham bells daughters?', 'what was alexander graham bells daughters names?', 'what are alexander bells daughters names?', 'what were alexander graham bells daughters name?', 'what were the daughters of alexanders graham bell?']

marian hubbard bell