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 was the 20th prime minister of canada?
Jean Chretien

When is gang beasts coming out for playstation 4?
12 December 2017

What is the common name of garcinia cola?

bitter kola