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: where does the phosphorus found in living things originate

SOLUTION: rocks

PROBLEM: what size sim card for ipad 4th generation

SOLUTION: Nano-SIM

PROBLEM: the minimum number of rings in a piston is

SOLUTION:
two