Question: what is the name of arsenal's stadium
[{'answer': 'Emirates Stadium', 'provenance': [{'wikipedia_id': '725839', 'title': 'Emirates Stadium', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 16, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '725839', 'title': 'Emirates Stadium', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 310, 'bleu_score': 0.7405299576202521, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5768427457033316602}, 'section': 'Section::::Abstract.'}]}]