Question: what was the name of the plane that dropped the bomb on hiroshima
[{'answer': 'Enola Gay', 'provenance': [{'wikipedia_id': '9597', 'title': 'Enola Gay', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 9, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '9597', 'title': 'Enola Gay', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 595, 'bleu_score': 0.9206449731230971, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14750930378514966515}, 'section': 'Section::::Abstract.'}]}]