Premise: James Earl Carter Jr. ( born October 1 , 1924 ) is an American politician who served as the 39th President of the United States from 1977 to 1981 . From 1963 to 1967 , Carter served in the Georgia State Senate . In 1980 , Carter faced a primary challenge from Senator Ted Kennedy , but Carter won re-nomination at the 1980 Democratic National Convention .
Hypothesis: Jimmy Carter was a senator.
Label: ENTAILMENT