Question: who implemented the one child policy in china
[{'answer': 'officials', 'provenance': [{'wikipedia_id': '44664', 'title': 'One-child policy', 'start_paragraph_id': 9, 'start_character': 547, 'end_paragraph_id': 9, 'end_character': 556, 'bleu_score': 1.0, 'section': 'Section::::Background.\n'}]}, {'provenance': [{'wikipedia_id': '44664', 'title': 'One-child policy', 'start_paragraph_id': 9, 'start_character': 382, 'end_paragraph_id': 9, 'end_character': 1092, 'bleu_score': 0.6745896946419251, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15460370307821633019}, 'section': 'Section::::Background.\n'}]}]