Question: when did nuclear power project start in pakistan
[{'answer': '1972', 'provenance': [{'wikipedia_id': '6375316', 'title': 'Nuclear power in Pakistan', 'start_paragraph_id': 5, 'start_character': 97, 'end_paragraph_id': 5, 'end_character': 101, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '6375316', 'title': 'Nuclear power in Pakistan', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 1069, 'bleu_score': 0.988472140978305, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5347095265923599881}, 'section': 'Section::::History.\n'}]}]