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In this task you will be given an answer to a question. You need to generate a question. The answer given should be a correct answer for the generated question.

A teenager wakes up inside an underground elevator with no memory of his identity. A group of male youths greet him in a large grassy area called the 'Glade' enclosed by tall stone walls. The boys ('Gladers') have formed a rudimentary society, with each assuming specialized tasks. Their leader, Alby, says that every boy eventually recalls his name but not his past. The boy learns that a vast Maze surrounding them may be the only way out. During the day, designated Runners search the Maze for an escape route, returning before nightfall when the entrance closes. No one has ever survived a night in the Maze.
Output:
what is a runner in the maze runner