Question: who built the rio hotel in las vegas
[{'answer': 'Marnell Corrao Associates', 'provenance': [{'wikipedia_id': '2237905', 'title': 'Rio All-Suite Hotel and Casino', 'start_paragraph_id': 5, 'start_character': 106, 'end_paragraph_id': 5, 'end_character': 131, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '2237905', 'title': 'Rio All-Suite Hotel and Casino', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 796, 'bleu_score': 0.9455282623453831, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11153874587120893609}, 'section': 'Section::::History.\n'}]}]