Given the task definition, example input & output, solve the new input case.
In this task, you are given a question. You have to answer the question based on your information.
Example: Roman Yakub won first price in a Choral Composition Competition at a liberal arts college founded by who?
Output: William Egbert
This is a good example, and output correctly answers the question.

New input case for you: Who directed "2012," an American epic disaster film which stars British actor Chiwetel Umeadi Ejiofo?
Output:
Roland Emmerich