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 is described as a shrewd and knavish sprite
[EX A]: Puck

[EX Q]: what are four functions of the cell or plasma membrane
[EX A]: controls the movement of substances

[EX Q]: when is season 7 walking dead coming out
[EX A]:
October 23, 2016