In this task, you are given a question. You have to answer the question based on your information.

Let me give you an example: Roman Yakub won first price in a Choral Composition Competition at a liberal arts college founded by who?
The answer to this example can be: William Egbert
Here is why: This is a good example, and output correctly answers the question.

OK. solve this:
What American singer, film actor and comedian, suddenly stood up during a performance of Gershwin's Liza (All the Clouds'll Roll Away) and started singing?
Answer:
Al Jolson