instruction:
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\*.
question:
during diagenesis the sediments may undergo ___ changes
answer:
physical


question:
when did angel leave buffy the vampire slayer
answer:
1999


question:
who won season 8 of rupaul's drag race
answer:

Bob the Drag Queen