You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
In this task, you are given a question. You have to answer the question based on your information.

Roman Yakub won first price in a Choral Composition Competition at a liberal arts college founded by who?
Solution: William Egbert
Why? This is a good example, and output correctly answers the question.

New input: What is the name of the broad expanse of flat land in the western United States and western Canada  where the species of plant called the Polygonum sawatchense of the buckwheat family be found?
Solution:
The Great Plains