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\*.

Input: Consider Input: who do the avengers fight in infinity war

Output: Thanos


Input: Consider Input: who played mark greene's mother on er

Output: Bonnie Bartlett


Input: Consider Input: when did canada establish its own honours system after using british honours for years


Output: 1967