Premise: Lee Harvey Oswald ( October 18 , 1939 -- November 24 , 1963 ) was an American former U.S. Marine who was arrested for the assassination of United States President John F. Kennedy on November 22 , 1963 . Oswald shot and killed Kennedy as the President traveled by motorcade through Dealey Plaza in the city of Dallas , Texas . Following Kennedy 's assassination , Oswald was initially arrested for the murder of police officer J. D. Tippit , who was killed on a Dallas street about 45 minutes after Kennedy was shot .
Hypothesis: Lee Harvey Oswald assassinated someone.
Label: ENTAILMENT