Question: who spoke the words ich bin ein berliner
[{'answer': 'U.S. President John F. Kennedy', 'provenance': [{'wikipedia_id': '14581', 'title': 'Ich bin ein Berliner', 'start_paragraph_id': 1, 'start_character': 93, 'end_paragraph_id': 1, 'end_character': 125, 'bleu_score': 0.668740304976422, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '14581', 'title': 'Ich bin ein Berliner', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 862, 'bleu_score': 0.8467472638595631, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2539889054408741919}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '14581', 'title': 'Ich bin ein Berliner', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['"Ich bin ein Berliner"" (, "I am a Berliner") is a well-known quote from a speech by United States President John F. Kennedy given on June 26, 1963, in West Berlin', '"Ich bin ein Berliner"" (, "I am a Berliner") is a well-known quote from a speech by United States President John F. Kennedy given on June 26, 1963, in West Berlin. It is widely regarded as the best-known speech of the Cold War and the most famous anti-communist speech.', 'United States President John F. Kennedy']}}]}]