Question: When did the washington redskins last win the super bowl?
Disambiguated questions and answers: question: What was the last superbowl won by the washington redskins?
When was the date the washington redskins last won the super bowl?
answer: Super Bowl XXVI
1992 Super Bowl
January 26, 1992
Natural Questions answer: 1991 (from the Wikipedia article "Washington Redskins")