Question: how many cubic meters in an acre foot
[{'answer': '1,233', 'provenance': [{'wikipedia_id': '899474', 'title': 'Acre-foot', 'start_paragraph_id': 11, 'start_character': 412, 'end_paragraph_id': 11, 'end_character': 417, 'bleu_score': 1.0, 'section': 'Section::::Application.\n'}]}]