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\*.

[EX Q]: who are the characters in green eggs and ham
[EX A]: Sam-I-am

[EX Q]: who was ancient china's main enemy that lived to the north
[EX A]: Sui Dynasty

[EX Q]: who wrote is you is or is you ain't my baby lyrics
[EX A]:
Billy Austin