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.

Example Input: Yellowstone national park includes parts of idaho montana and?
Example Output: Wyoming

Example Input: Who did the soviet union signed a nonaggression pact with in 1939?
Example Output: Nazi Germany

Example Input: Who directed valerian and the city of a thousand planets?
Example Output:
Luc Besson