Premise: Hubert Horatio Humphrey Jr. ( May 27 , 1911January 13 , 1978 ) was an American politician who served as the 38th Vice President of the United States under President Lyndon B. Johnson from 1965 to 1969 . 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 . Humphrey ran for two failed Presidential campaigns in the 1952 and 1960 Democratic primaries . He became the first Deputy President pro tempore of the United States Senate and served until his death in 1978 .
Hypothesis: Hubert Humphrey served in at least one political position in the US.
Label: ENTAILMENT