Premise: Hubert Humphrey . Humphrey twice served in the United States Senate , representing Minnesota from 1949 to 1964 and 1971 to 1978 . Humphrey served as mayor from 1945 to 1948 , he was reelected and became the co-founder of the liberal anti-communist group Americans for Democratic Action in 1947 . He served three terms in the Senate from 1949 to 1964 and was the Democratic Majority Whip from 1961 to 1964 .
Hypothesis: Hubert Humphrey served in at least one political position in the US.
Label: ENTAILMENT