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 sang the song cotton fields back home?

SOLUTION: Who sang the song cotton fields back home in 1940?

PROBLEM: Who won the afc championship game this year?

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

PROBLEM: When do the interns become residents in grey's anatomy?

SOLUTION:
What is the name of the episode in which interns become residents in Grey's anatomy?