Question: which two regions grow most of china’s rice
[{'answer': 'provinces along the Yangtze River', 'provenance': [{'wikipedia_id': '22075338', 'title': 'Rice production in China', 'start_paragraph_id': 2, 'start_character': 288, 'end_paragraph_id': 2, 'end_character': 321, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'provinces in the south', 'provenance': [{'wikipedia_id': '22075338', 'title': 'Rice production in China', 'start_paragraph_id': 2, 'start_character': 329, 'end_paragraph_id': 2, 'end_character': 351, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'provinces along the Yangtze River and in provinces in the south'}, {'provenance': [{'wikipedia_id': '22075338', 'title': 'Rice production in China', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 18385945818782891177}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '22075338', 'title': 'Rice production in China', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 997, 'bleu_score': 0.988795076120877, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 18385945818782891177}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '135336', 'title': 'North China Plain', 'section': 'Section::::Abstract.', 'start_paragraph_id': 2, 'end_paragraph_id': 2, 'meta': {'evidence_span': ["the North China Plain, a great delta created from silt dropped at the Yellow River's mouth over the millennia. The North China Plain extends over much of Henan, Hebei, and Shandong provinces, and merges with the Yangtze Delta in northern Jiangsu and Anhui provinces. The", "n the river's last valley before the North China Plain, a great delta created from silt dropped at the Yellow River's mouth over the millennia. The North China Plain extends over much of Henan, Hebei, and Shandong provinces, and merges with the Yangtze Delta in northern Jiangsu and Anhui provinces. The Yellow River meanders over the fertile, densely populated plain emp"]}}]}, {'provenance': [{'wikipedia_id': '22075338', 'title': 'Rice production in China', 'section': 'Section::::Abstract.', 'start_paragraph_id': 2, 'end_paragraph_id': 2, 'meta': {'evidence_span': ['m four different crops. The early rice crop grows primarily in provinces along the Yangtze River and in provinces in the south; it is planted in February to April and harvested in June and July', 'The early rice crop grows primarily in provinces along the Yangtze River and in provinces in the south; it is planted in February to April and harvested in June and July and contributes about 34 percent to total rice output. Intermediate and single-crop late rice grows in the southwest and along the Yangtze; it is planted in March to June and harvested in October and November and also contributed about 34 percent to total rice output in the 1980s.']}}]}]