Question: how long is the presidents term in mexico
[{'answer': 'Six years', 'provenance': [{'wikipedia_id': '24356889', 'title': 'President of Mexico', 'start_paragraph_id': 16, 'start_character': 110, 'end_paragraph_id': 16, 'end_character': 119, 'bleu_score': 1.0, 'section': 'Section::::Presidential elections.\n'}]}]