Question: when did the body style change on the chevy tahoe
[{'answer': '1994', 'provenance': [{'wikipedia_id': '947387', 'title': 'Chevrolet Tahoe', 'start_paragraph_id': 1, 'start_character': 317, 'end_paragraph_id': 1, 'end_character': 321, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '947387', 'title': 'Chevrolet Tahoe', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 844, 'bleu_score': 0.8810215149021241, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8688176954275224833}, 'section': 'Section::::Abstract.'}]}]