Question: what is the capacity of university of phoenix stadium
[{'answer': '63,400', 'provenance': [{'wikipedia_id': '2748329', 'title': 'State Farm Stadium', 'start_paragraph_id': 6, 'start_character': 86, 'end_paragraph_id': 6, 'end_character': 92, 'bleu_score': 1.0, 'section': 'Section::::Facility information and history.\n'}]}]