Question: what is the most spoken language in mexico
[{'answer': 'Spanish', 'provenance': [{'wikipedia_id': '3935520', 'title': 'Languages of Mexico', 'start_paragraph_id': 1, 'start_character': 378, 'end_paragraph_id': 1, 'end_character': 385, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]