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 championships trophy in cricket match in london

A: Pakistan
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Q: where might new segments be added during growth in a polychaete worm

A: rear end
****
Q: when did the chicken pox vaccine come out in the us

A:
1984
****