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.

Q: concept: Werner Heisenberg  question:  what did heisenberg say about electrons?

A: ['wolfgang ernst pauli worked with werner karl heisenberg']
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Q: concept: Barack Obama  question:  when was barack obama elected president?

A: ['1/10/2011']
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Q: concept: Pakistan  question:  who was the president of pakistan in 1980?

A:
['Muhammad Zia-ul-Haq']
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