Question: who served as the mayor of new york during the 911 attacks
[{'answer': 'Rudy Giuliani', 'provenance': [{'wikipedia_id': '11804099', 'title': 'Rudy Giuliani during the September 11 attacks', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 13, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '11804099', 'title': 'Rudy Giuliani during the September 11 attacks', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 242, 'bleu_score': 0.9560167778278961, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9286959455975283436}, 'section': 'Section::::Abstract.'}]}]