In this task, you are given a question. You have to answer the question based on your information.
One example: Roman Yakub won first price in a Choral Composition Competition at a liberal arts college founded by who?
Solution is here: William Egbert
Explanation: This is a good example, and output correctly answers the question.

Now, solve this: Which happened first the Western Allied invasion of Germany or the Battle of Iwo Jima?
Solution:
Battle of Iwo Jima