Question: when did the new shape audi a6 come out
[{'answer': '12 August 2008', 'provenance': [{'wikipedia_id': '540028', 'title': 'Audi A6', 'start_paragraph_id': 57, 'start_character': 43, 'end_paragraph_id': 57, 'end_character': 57, 'bleu_score': 1.0, 'section': 'Section::::C6 ("Typ" 4F, 2004–2011).:C6 facelift.\n'}]}, {'provenance': [{'wikipedia_id': '540028', 'title': 'Audi A6', 'start_paragraph_id': 57, 'start_character': 0, 'end_paragraph_id': 57, 'end_character': 208, 'bleu_score': 0.9466178497997021, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1077435667842541041}, 'section': 'Section::::C6 ("Typ" 4F, 2004–2011).:C6 facelift.\n'}]}]