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]: what is the microscopic unit of the kidney
[EX A]: The nephron

[EX Q]: who sings the counting to 4 song on sesame street
[EX A]: Feist

[EX Q]: the djoser pyramid was unique in the old kingdom in being
[EX A]:
This first Egyptian pyramid