Question: the u.s. manhattan project of 1945 was responsible for developing
[{'answer': 'the first nuclear weapons', 'provenance': [{'wikipedia_id': '19603', 'title': 'Manhattan Project', 'start_paragraph_id': 1, 'start_character': 99, 'end_paragraph_id': 1, 'end_character': 124, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '19603', 'title': 'Manhattan Project', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 1120, 'bleu_score': 0.9601876806302241, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13280921825591917123}, 'section': 'Section::::Abstract.'}]}]