Question: who spoke the words ich bin ein berliner?
Evidence: "Ich bin ein Berliner" (German pronunciation: [ɪç ˈbɪn ʔaɪn bɛʁˈliːnɐ]; "I am a Berliner") is a speech by United States President John F. Kennedy given on June 26, 1963, in West Berlin. It is one of the best-known speeches of the Cold War and among the most famous anti-communist speeches.
Answer: U.S. President John F. Kennedy