Question: who is playing in the big ten championship game
[{'answer': 'Ohio State Buckeyes', 'provenance': [{'wikipedia_id': '53220616', 'title': '2017 Big Ten Football Championship Game', 'start_paragraph_id': 7, 'start_character': 11, 'end_paragraph_id': 7, 'end_character': 30, 'bleu_score': 1.0, 'section': 'Section::::Teams.:Wisconsin Badgers.\n'}]}, {'answer': 'Wisconsin Badgers', 'provenance': [{'wikipedia_id': '53220616', 'title': '2017 Big Ten Football Championship Game', 'start_paragraph_id': 3, 'start_character': 266, 'end_paragraph_id': 3, 'end_character': 283, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}]