Question: what is the name of the two atomic bombs dropped on japan
[{'answer': 'Little Boy', 'provenance': [{'wikipedia_id': '11778948', 'title': 'Atomic bombings of Hiroshima and Nagasaki', 'start_paragraph_id': 3, 'start_character': 470, 'end_paragraph_id': 3, 'end_character': 480, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Fat Man', 'provenance': [{'wikipedia_id': '11778948', 'title': 'Atomic bombings of Hiroshima and Nagasaki', 'start_paragraph_id': 3, 'start_character': 547, 'end_paragraph_id': 3, 'end_character': 554, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '11778948', 'title': 'Atomic bombings of Hiroshima and Nagasaki', 'start_paragraph_id': 24, 'start_character': 0, 'end_paragraph_id': 24, 'end_character': 838, 'bleu_score': 0.959893969644335, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14374659351306128930}, 'section': 'Section::::Background.:Atomic bomb development.\n'}]}]