Question: who was the primary scientist that led the manhattan project
[{'answer': 'Robert Oppenheimer', 'provenance': [{'wikipedia_id': '19603', 'title': 'Manhattan Project', 'start_paragraph_id': 1, 'start_character': 350, 'end_paragraph_id': 1, 'end_character': 368, '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': 11103747438544010219}, 'section': 'Section::::Abstract.'}]}]