Based on the given question and tppic, give an answer. The answer is available on on the internet. The questions are mostly centered around a single named entity.
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Question: concept: Dr Cristina Yang  question:  who did cristina yang's husband cheated on her with?

Answer: ['Preston Burke']


Question: concept: Israel  question:  what form of government is israel?

Answer: ['Democracy']


Question: concept: Wayne Gretzky  question:  what 4 teams did wayne gretzky play for?

Answer:
Edmonton Oilers