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 Q]: when was the dubai metro green line opened to public
[EX A]: September 2011 (

[EX Q]: when was the hitchhiker's guide to the galaxy published
[EX A]: 1979

[EX Q]: who wrote the songs to the greatest showman
[EX A]:
Joseph Trapanese