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.

[EX Q]: What was the name of the super continent during the mesozoic era?
[EX A]: Pangaea

[EX Q]: Who won season 6 worst cooks in america?
[EX A]: Kristen Redmond

[EX Q]: Which pair of ribs articulates with the sternum at the sternal angle?
[EX A]:
second rib