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 has to push the rock up the hill?
Sisyphus

Who sings the theme song from phineas and ferb?
Bowling for Soup

Who killed the wicked witch of the west?

Dorothy Gale