Question: When is Kathleen Cavendish, Marchioness Of Hartington's father's birthday?
Sentence (from "Joseph P. Kennedy Sr."): Three of the Kennedys' sons attained distinguished political positions: John F. Kennedy (1917–1963) served as a U.S. Senator from Massachusetts and as President of the United States, Robert F. Kennedy (1925–1968) served as Attorney General and as a U.S. Senator from New York, and Ted Kennedy (1932–2009) also served as a U.S. Senator from Massachusetts.
Relevant evidence: No