Question: when is the last time the minnesota vikings have been in the playoffs
[{'answer': '2017', 'provenance': [{'wikipedia_id': '20134', 'title': 'Minnesota Vikings', 'start_paragraph_id': 7, 'start_character': 117, 'end_paragraph_id': 7, 'end_character': 121, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}]