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 is the founder of babylon as recorded in the bible?

SOLUTION: Nimrod

PROBLEM: What does code 11 mean in an airport?

SOLUTION: Late check-in, acceptance of passengers after deadline

PROBLEM: What were the names of the group abba?

SOLUTION:
Anni-Frid Lyngstad