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\*.

Ex Input:
who is the longest serving director of isro

Ex Output:
Dhawan, Satish


Ex Input:
who sang the song the night begins to shine

Ex Output:
B.E.R.


Ex Input:
when was the birds nest stadium built for the beijing games

Ex Output:

September 2007