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:
At Which film festival does Barry Keoghan starring The Killing of a Sacred Deer film won best screenplay award in 2017?
Answer:
Cannes Film Festival