TASK DEFINITION: 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\*.
PROBLEM: the reciprocal (inverse) of the period of oscillation is

SOLUTION: Frequency

PROBLEM: local governments that provide a single service or a closely related set of services are

SOLUTION: Special districts

PROBLEM: who is the authorized signature on a cashiers check

SOLUTION:
a cashier