Question: when did wales last win the 6 nations
[{'answer': '2013', 'provenance': [{'wikipedia_id': '26547', 'title': 'Six Nations Championship', 'start_paragraph_id': 45, 'start_character': 513, 'end_paragraph_id': 45, 'end_character': 517, 'bleu_score': 1.0, 'section': 'Section::::Records.\n'}]}]