TASK DEFINITION: In this task, you're given an ambiguous question (which can be answered in more than one way). Your task is to write a question that clarifies the given question in such a way that the generated question has one unique answer.
PROBLEM: When did the astros become an american league team?

SOLUTION: What year did the astros become an american league team?

PROBLEM: When does the my little pony movie release?

SOLUTION: When does the My Little Pony: The Movie (1986 film) release?

PROBLEM: How many players are on the field in the cfl?

SOLUTION:
How many players are on the field in Canadian Football League games?