In this task, you're given an open-domain question. Your task is to provide an answer to the given question. There is only one unique answer for each question. Your answer should be short, and refer to an entity, date, number, etc. Do not put your answer in the context of a sentence.

Who became famous by singing the blues during the jazz age?
Empress of the Blues

Who was associated with the establishment of the banaras hindu university?
Madan Mohan Malaviya

When did twenty one pilots win a grammy?

59th Annual Grammy Awards