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.

[EX Q]: Which african american led the back to africa movement during the early 20th century?
[EX A]: Marcus Mosiah Garvey Jr.

[EX Q]: Who wrote the majority opinion in mcdonald v. chicago?
[EX A]: Samuel Anthony Alito Jr.

[EX Q]: East african rift is what type of plate boundary?
[EX A]:
divergent tectonic plate boundary