Question: how old do you have to be to get your drivers license in the state of texas
[{'answer': '18', 'provenance': [{'wikipedia_id': '15429177', 'title': "Driver's licenses in the United States", 'start_paragraph_id': 3, 'start_character': 213, 'end_paragraph_id': 3, 'end_character': 215, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}]