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: how many times have ajax won the european cup
Example Output: four

Example Input: who is the highest goal scorer in the confederation cup 2017
Example Output: Lars Stindl

Example Input: what was the purpose of the wall of jericho
Example Output:
defensive or flood protection