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: Who created the plan that became known as the american system?

SOLUTION: Who  was the creation of the American System based on?

PROBLEM: Who is the highest ranked golfer in the world?

SOLUTION: Who is the highest ranked golfer in the world on February 19, 2017?

PROBLEM: What grade does high school start in japan?

SOLUTION:
What grade does junior high school start in japan?