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]: names of the metropolitan municipalities in south africa
[EX A]: Mangaung Metropolitan Municipality

[EX Q]: when do the afl semi finals start 2018
[EX A]: Friday, September 14

[EX Q]: the reciprocal (inverse) of the period of oscillation is
[EX A]:
Frequency