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: When did the new orleans saints win the superbowl?

SOLUTION: 2009

PROBLEM: What does the rosenberg self esteem scale measure?

SOLUTION: self-esteem

PROBLEM: Who named the country 'islas de san lazaro'?

SOLUTION:
Ferdinand Magellan