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 wrote the majority opinion in mcdonald v. chicago?

A: Samuel Anthony Alito Jr.
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Q: When did royal mail and post office split?

A: 1 April 2012
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Q: The first experimental laboratory in psychology in the united states was founded by?

A:
Granville Stanley Hall
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