Question: No team has won a championship since the Redskins at a Superbowl, at this superbowl what was the final score?
Sentence (from "Sports in Washington, D.C."): Washington teams are widely known as some of the least successful in American sports, as no big four team has reached its sport's conference championship round since the 1998 Stanley Cup playoffs and no team has won a championship since the Redskins won Super Bowl XXVI.
Relevant evidence: Yes