Question: what river in china is considered to be the cradle of agriculture
[{'answer': 'Yellow River', 'provenance': [{'wikipedia_id': '50819', 'title': 'Yellow River', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 12, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]