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\*.

[Q]: who won the battle of britain in world war 2
[A]: British victory


[Q]: how many types of finch species are there
[A]: about fifteen


[Q]: how many u-boats did germany have in world war 2
[A]:
some 1,250 U-boats