Question: when did the body style change on the bmw x5
[{'answer': 'the 2004 model year', 'provenance': [{'wikipedia_id': '956354', 'title': 'BMW X5', 'start_paragraph_id': 8, 'start_character': 38, 'end_paragraph_id': 8, 'end_character': 57, 'bleu_score': 1.0, 'section': 'Section::::First generation (E53; 1999–2006).\n'}]}, {'provenance': [{'wikipedia_id': '956354', 'title': 'BMW X5', 'start_paragraph_id': 8, 'start_character': 0, 'end_paragraph_id': 8, 'end_character': 96, 'bleu_score': 0.8781879837907131, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4168233285742929566}, 'section': 'Section::::First generation (E53; 1999–2006).\n'}]}]