Question: who owns mandalay bay casino in las vegas
[{'answer': 'MGM Resorts International', 'provenance': [{'wikipedia_id': '724760', 'title': 'Mandalay Bay', 'start_paragraph_id': 1, 'start_character': 124, 'end_paragraph_id': 1, 'end_character': 149, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '724760', 'title': 'Mandalay Bay', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 305, 'bleu_score': 0.8615894073865311, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12981838717555922577}, 'section': 'Section::::Abstract.'}]}]