In this task, you're given an open-domain question. Your task is to provide an answer to the given question. There is only one unique answer for each question. Your answer should be short, and refer to an entity, date, number, etc. Do not put your answer in the context of a sentence.

Q: Who plays agent romanoff in iron man 2?

A: Scarlett Johansson
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Q: What is the capital city of northern island?

A: What is the capital city of Northern Ireland?
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Q: What is the area in physics that deals with stationary electrical charges?

A:
Electrostatics
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