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 wrote the book journey to the center of the earth?

SOLUTION: Jules Verne

PROBLEM: Who played guitar on two tickets to paradise?

SOLUTION: Jimmy Lyon

PROBLEM: When did the battle of the bulge start?

SOLUTION:
16 December 1944