Question: what kind of economic system does china use
[{'answer': 'socialist market economy', 'provenance': [{'wikipedia_id': '19284336', 'title': 'Economy of China', 'start_paragraph_id': 1, 'start_character': 4, 'end_paragraph_id': 1, 'end_character': 28, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '19284336', 'title': 'Economy of China', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 201, 'bleu_score': 0.5560186243743891, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6029883666631919764}, 'section': 'Section::::Abstract.'}]}]