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


question:
who played ross poldark in the original tv series
answer:
Robin Ellis


question:
when did the us normalize relations with china
answer:

January 1, 1979