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.

What time frame does stranger things take place?
1980s

How many books of game of thrones will there be?
seven

Who wrote i look to you by whitney houston?

Robert Sylvester Kelly