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.

Input: Consider Input: How much money does tourism bring to canada?

Output: $17.4 billion


Input: Consider Input: Who plays agent romanoff in iron man 2?

Output: Scarlett Johansson


Input: Consider Input: What's the name for a chunk of space debris that is still floating in space?


Output: orbital debris, space junk, space pollution, space waste, space trash, and space garbage