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

Example input: Roman Yakub won first price in a Choral Composition Competition at a liberal arts college founded by who?
Example output: William Egbert
Example explanation: This is a good example, and output correctly answers the question.
Q: Disappearance of Renee MacRae, Britain's longest running missing persons case, is as notorious as the murder cases of this serial killer involved with how many people?
A:
three