a • John F. Kennedy had just been re-elected as President of the United States.
b • Lee Harvey Oswald was never tried in court for the assassination of JFK.
c • Viewers saw, live on TV, how Lee Harvey Oswald was killed.
d • The Warren Commission concluded that Lee Harvey Oswald was the only killer.
e • The ‘grassy knoll’ was where Lee Harvey Oswald was standing when he shot JFK.
f • Some believe that the CIA was behind the murder of Lee Harvey Oswald.