Question: who was the man who escaped from alcatraz
[{'answer': 'Clarence Anglin', 'provenance': [{'wikipedia_id': '20489977', 'title': 'June 1962 Alcatraz escape attempt', 'start_paragraph_id': 1, 'start_character': 212, 'end_paragraph_id': 1, 'end_character': 227, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'John Anglin', 'provenance': [{'wikipedia_id': '20489977', 'title': 'June 1962 Alcatraz escape attempt', 'start_paragraph_id': 12, 'start_character': 463, 'end_paragraph_id': 12, 'end_character': 474, 'bleu_score': 1.0, 'section': 'Section::::Inmates.:John and Clarence Anglin.\n'}]}, {'answer': 'Frank Morris', 'provenance': [{'wikipedia_id': '20489977', 'title': 'June 1962 Alcatraz escape attempt', 'start_paragraph_id': 1, 'start_character': 186, 'end_paragraph_id': 1, 'end_character': 198, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]