In this task, You are given an open-domain question that can be answered based on factual information. Your task is to provide \*short\* answer (in a few words only) for the given question. The short answer can be one or more entities or it can also be boolean \*yes\* or \*no\*.
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Question: who created the classification system that divides galaxies by shape

Answer: Edwin Hubble


Question: who led the metis in the rebellions at red river in 1870 and in the northwest in 1885

Answer: Louis Riel


Question: how much did a ps4 cost when it came out

Answer:
$399.99