Question: When have the minnesota vikings been in the super bowl?
Disambiguated questions and answers: question: In what years have the Minnesota Vikings been in the super bowl?
Which Super Bowls have the Minnesota Vikings been in?
answer: 1970, 1974, 1975, and 1977
IV, VIII, IX, and XI
Natural Questions answer: in the 1970s (from the Wikipedia article "Minnesota Vikings")