Question: When did the broncos last win the superbowl?
Disambiguated questions and answers: question: When did the broncos last win the superbowl in 2016?
When did the broncos last win the superbowl in 1999?
When did the broncos last win the superbowl in 1998?
answer: February 7, 2016
January 31, 1999
January 25, 1998
Natural Questions answer: 2015 (from the Wikipedia article "Denver Broncos")