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: How many episodes are on season 3 of empire?
Example Output: 18

Example Input: Who played charlie in the chocolate factory 2005?
Example Output: Alfred Thomas Highmore

Example Input: Who is known for decades of research on gorillas in the mountain forests of africa?
Example Output:
Dian Fossey