Question: what is the size of the chinese economy
[{'answer': "world 's second largest", 'provenance': [{'wikipedia_id': '19284336', 'title': 'Economy of China', 'start_paragraph_id': 1, 'start_character': 70, 'end_paragraph_id': 1, 'end_character': 100, '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': 734, 'bleu_score': 0.7225406305072961, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5551843540426453495}, 'section': 'Section::::Abstract.'}]}]