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: Who plays will conway on house of cards?

SOLUTION: Joel Kinnaman

PROBLEM: Who is the best selling novelist of all time?

SOLUTION: Dame Agatha Mary Clarissa Christie, Lady Mallowan, DBE

PROBLEM: Who wrote is you is or is you ain't my baby lyrics?

SOLUTION:
Louis Thomas Jordan