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: What is wrong with april kepner's baby on grey's anatomy?
Example Output: Osteogenesis Imperfecta type 2

Example Input: Which unit is used to measure mass in the metric system?
Example Output: kilogramme

Example Input: Who was first offered the part of columbo?
Example Output:
Bert Freed