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: Where would the highest density of mangrove forests be found?

SOLUTION: What country has the largest percentage of the world's mangrove forests?

PROBLEM: Who won the afc championship game this year?

SOLUTION: Who won the AFC Championship Game in the 2017 NFL season?

PROBLEM: When did america become united states of america?

SOLUTION:
When did the country that would become known as the United States of America become a country?