Question: what was chuck norris name in walker texas ranger
[{'answer': 'Cordell Walker', 'provenance': [{'wikipedia_id': '391455', 'title': 'Walker, Texas Ranger', 'start_paragraph_id': 4, 'start_character': 369, 'end_paragraph_id': 4, 'end_character': 383, 'bleu_score': 1.0, 'section': 'Section::::Background.\n'}]}]