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 is the si unit of time period?
second

Who was the 20th prime minister of canada?
Jean Chretien

Where was kho kho game started in india?

Maharashtra, India