Premise: Minnesota Vikings . The Vikings joined the National Football League ( NFL ) as an expansion team in 1960 , and first took the field for the 1961 season . The team has played in four Super Bowl games , but lost each one . The Super Bowl is the annual championship game of the National Football League ( NFL ) . U.S. Bank Stadium is a fixed-roof stadium located in the Downtown East section of Minneapolis , Minnesota , United States , on the former site of Hubert H. Humphrey Metrodome .
Hypothesis: The Minnesota Vikings is a National Football League team.
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