Question: of 600 large cities in china about how many are experiencing a water shortage
[{'answer': '400', 'provenance': [{'wikipedia_id': '3204861', 'title': 'Water resources of China', 'start_paragraph_id': 16, 'start_character': 386, 'end_paragraph_id': 16, 'end_character': 389, 'bleu_score': 1.0, 'section': 'Section::::Water quantity.:Water balance.\n'}]}, {'provenance': [{'wikipedia_id': '3204861', 'title': 'Water resources of China', 'start_paragraph_id': 38, 'start_character': 0, 'end_paragraph_id': 38, 'end_character': 968, 'bleu_score': 0.972233322266093, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15350200160981342296}, 'section': 'Section::::Water quality.:Pollution and water shortage.\n'}]}]