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: The name the babylonian captivity for the avignon papacy references the?

SOLUTION: exile of the Jews in Babylon

PROBLEM: Where is the descending aorta located in the mediastinum?

SOLUTION: posterior mediastinal cavity

PROBLEM: Where does the last name deleon originate from?

SOLUTION:
Province of Leon, Spain