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.

Ex Input:
Who sang the best day of my life?

Ex Output:
Who sang the 2013 version of Best Day of My Life?


Ex Input:
When did the first answering machine come out?

Ex Output:
When did the first commercially successful answering machine come out?


Ex Input:
What defcon level is the us at right now?

Ex Output:

What DEFCON Level was the US placed at on September 11, 2001?