Question: who won the grey cup this year 2017
[{'answer': 'the Toronto Argonauts', 'provenance': [{'wikipedia_id': '51253536', 'title': '105th Grey Cup', 'start_paragraph_id': 1, 'start_character': 86, 'end_paragraph_id': 1, 'end_character': 107, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]