TASK DEFINITION: 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.
PROBLEM: Yellowstone national park includes parts of idaho montana and?

SOLUTION: Wyoming

PROBLEM: Who plays will conway on house of cards?

SOLUTION: Joel Kinnaman

PROBLEM: How many episodes star trek discovery season one?

SOLUTION:
15