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: when did they change pennies from copper to zinc

A: 1943
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Q: who played mark greene's mother on er

A: Bonnie Bartlett
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Q: when does jane the virgin start season 4

A:
October 13, 2017
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