Teacher: In this task, you are given a question. You have to answer the question based on your information.
Teacher: Now, understand the problem? If you are still confused, see the following example:
Roman Yakub won first price in a Choral Composition Competition at a liberal arts college founded by who?
Solution: William Egbert
Reason: This is a good example, and output correctly answers the question.

Now, solve this instance: in what position did Mark Beresford Russell Grant-Sturgis serve under the person who would later be the prime minister of the united kingdom?
Student:
assistant private secretary