Question: where did the first farming communities develop in early china
[{'answer': 'Pearl River valley', 'provenance': [{'wikipedia_id': '2899597', 'title': 'History of agriculture', 'start_paragraph_id': 33, 'start_character': 135, 'end_paragraph_id': 33, 'end_character': 153, 'bleu_score': 1.0, 'section': 'Section::::Civilizations.:Ancient China.\n'}]}, {'provenance': [{'wikipedia_id': '2899597', 'title': 'History of agriculture', 'start_paragraph_id': 33, 'start_character': 0, 'end_paragraph_id': 33, 'end_character': 227, 'bleu_score': 0.855530866466304, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5947316860835999739}, 'section': 'Section::::Civilizations.:Ancient China.\n'}]}]