Question: When did the who play at the super bowl?
Disambiguated questions and answers: question: When during the super bowl did The Who perform?
On what date did the Who play at the super bowl?
At which super bowl did Thw Who perform?
answer: halftime
February 7, 2010
Super Bowl XLIV
Natural Questions answer: Feb 7 , 2010 (from the Wikipedia article "List of Super Bowl halftime shows")