Question: las vegas is in which state of usa
[{'answer': 'Nevada', 'provenance': [{'wikipedia_id': '47737', 'title': 'Las Vegas', 'start_paragraph_id': 1, 'start_character': 203, 'end_paragraph_id': 1, 'end_character': 209, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '47737', 'title': 'Las Vegas', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 616, 'bleu_score': 0.9239738172458011, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 752932423761599376}, 'section': 'Section::::Abstract.'}]}]