Question: who owned nevada before it became a state
[{'answer': 'Mexico', 'provenance': [{'wikipedia_id': '15040772', 'title': 'History of Nevada', 'start_paragraph_id': 5, 'start_character': 39, 'end_paragraph_id': 5, 'end_character': 45, 'bleu_score': 1.0, 'section': 'Section::::Early historical facts.\n'}]}]