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.

When is the last time the seahawks won a superbowl?
February 1, 2015

Who led the us movement to take over the island of hawaii?
John Leavitt Stevens

When did pam get pregnant again on the office?

beginning of Season 8