text: This president was the first to hold Trick-or-Treating in the White House and used the event to support UNICEF.
full_question: This president was the first to hold Trick-or-Treating in the White House and used the event to support UNICEF. This president called Dag Hammarskjöld “the greatest statesman of our century” after a plane crash and replaced James Jeremiah Wadsworth with Adlai Stevenson II as ambassidor to a certain organization. This president pushed for the establishment of the Peace Corps and signed the Partial Nuclear Test Ban Treaty. This president was the only one to win a Pulitzer Prize and appointed his brother as Atourney General. For ten points, name this president who was killed by Lee Harvey Oswald.
first_sentence: This president was the first to hold Trick-or-Treating in the White House and used the event to support UNICEF.