Question: when was the last time adelaide was in a grand final
[{'answer': '2012', 'provenance': [{'wikipedia_id': '100978', 'title': 'Adelaide Football Club', 'start_paragraph_id': 18, 'start_character': 1268, 'end_paragraph_id': 18, 'end_character': 1272, 'bleu_score': 1.0, 'section': 'Section::::History.:2010s: Rebuilding and tragedy.\n'}]}]