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 song imagine by the beatles?
[A]: John Lennon and Yoko Ono


[Q]: Who beat one direction to win x factor?
[A]: Matt Cardle


[Q]: He played sam in life as a house?
[A]:
Hayden Christensen