Question: who won the national college football championship last year
[{'answer': 'Clemson', 'provenance': [{'wikipedia_id': '44628927', 'title': '2017 College Football Playoff National Championship', 'start_paragraph_id': 2, 'start_character': 106, 'end_paragraph_id': 2, 'end_character': 113, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '44628927', 'title': '2017 College Football Playoff National Championship', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 447, 'bleu_score': 0.8829018286975181, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5058855087296512273}, 'section': 'Section::::Abstract.'}]}]