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.

Where can a description of us citizens civil liberties be found?
United States Bill of Rights

Who sang the theme to life of brian?
Sonia Jones

Who is regarded as the father of green revolution?

Norman Ernest Borlaug