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: there are currently how many sitting members on the us supreme court

SOLUTION: 9

PROBLEM: average life expectancy of a man in england

SOLUTION: 79.4

PROBLEM: what is the microscopic unit of the kidney

SOLUTION:
The nephron