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\*.

Example Input: what is the purpose of a lesson plan
Example Output: guide class learning

Example Input: who wins the fight between achilles and hector
Example Output: Hector

Example Input: the shortest distance between two points on the earth's surface is
Example Output:
great-circle distance