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]: How much money does tourism bring to canada?
[A]: $17.4 billion


[Q]: Where are sister chromatids attached to one another?
[A]: common centromere


[Q]: When did the sabbath day change to sunday?
[A]:
March 7, 321