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's won the most fa cup's?

SOLUTION: What team won the most fa cup's?

PROBLEM: How much sugar in a packet of sugar?

SOLUTION: How much sugar is generally in a packet of sugar in the US?

PROBLEM: Who is the oldest player to have appeared in a world cup match?

SOLUTION:
Who is the oldest player to have appeared in a men's world cup match?