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\*.

Q: who was crowned emperor of the west in 800 ce

A: Charlemagne
****
Q: who won the gold medal for men's halfpipe

A: Gian Simmen
****
Q: season 15 judges so you think you can dance

A:
Stephen "tWitch" Boss
****