Question: who occupied alcatraz an abandoned federal prison in 1969
[{'answer': '89 American Indians', 'provenance': [{'wikipedia_id': '15814866', 'title': 'Occupation of Alcatraz', 'start_paragraph_id': 1, 'start_character': 105, 'end_paragraph_id': 1, 'end_character': 124, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '15814866', 'title': 'Occupation of Alcatraz', 'start_paragraph_id': 10, 'start_character': 0, 'end_paragraph_id': 10, 'end_character': 325, 'bleu_score': 0.9611463610973231, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 18049503362991335768}, 'section': 'Section::::Occupation.\n'}]}]