Question: who was the person 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.'}]}, {'provenance': [{'wikipedia_id': '1707516', 'title': 'Escape from Alcatraz (film)', 'section': 'Section::::Plot.\n', 'start_paragraph_id': 4, 'end_paragraph_id': 4, 'meta': {'evidence_span': ['Clarence Anglin', 'Over the next few months Morris, the Anglins and Butts dig through the walls of their cells with spoons (which have been soldered into makeshift shovels), make papier-mâché dummies to act as decoys, and construct a raft out of raincoats.']}}]}, {'provenance': [{'wikipedia_id': '20489977', 'title': 'June 1962 Alcatraz escape attempt', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['Clarence Anglin', 'The June 1962 Alcatraz escape attempt was a prison break from Alcatraz Federal Penitentiary, a maximum-security facility located on an island in San Francisco Bay, undertaken by inmates Frank Morris and John and Clarence Anglin. The three men were able to escape from their cells and leave the island in a makeshift raft.', 'The June 1962 Alcatraz escape attempt was a prison break from Alcatraz Federal Penitentiary, a maximum-security facility located on an island in San Francisco Bay, undertaken by inmates Frank Morris and John and Clarence Anglin. The three men were able to escape from their cells and leave the island in a makeshift raft. It remains unknown what happened to them after entering San Francisco Bay.']}}]}]