TASK DEFINITION: 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.
PROBLEM: Questions: ['what day was barrack obama elected president?']

SOLUTION: 2008-11-04

PROBLEM: Questions: ['the dat that thomas becket was killed?']

SOLUTION: 1170-12-29

PROBLEM: Questions: ['what year did thomas jefferson become president of the united states?', 'when was thomas jefferson president of the us?', 'what year did thomas jefferson become president of the united stated?']

SOLUTION:
1801