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\*.

when was the system of checks and balances created
1748

where does doctor strange go to get his powers
the Himalayas

last male tennis player to win grand slam

Stéphane Houdet