Question: china one child policy when did it end
[{'answer': 'the end of 2015', 'provenance': [{'wikipedia_id': '44664', 'title': 'One-child policy', 'start_paragraph_id': 1, 'start_character': 618, 'end_paragraph_id': 1, 'end_character': 633, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '44664', 'title': 'One-child policy', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 893, 'bleu_score': 0.7001895084663741, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6393051203171721348}, 'section': 'Section::::Abstract.'}]}]