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: how long is a tracking number for ups

A: 18 characters
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Q: who is the head coach of the raiders

A: Jon Gruden
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Q: name of a country that starts with y

A:
Yemen
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