Question: who is broadcasting the college football national champions
[{'answer': 'ESPN', 'provenance': [{'wikipedia_id': '48966894', 'title': '2018 College Football Playoff National Championship', 'start_paragraph_id': 20, 'start_character': 37, 'end_paragraph_id': 20, 'end_character': 41, 'bleu_score': 1.0, 'section': 'Section::::Broadcasting.\n'}]}, {'provenance': [{'wikipedia_id': '48966894', 'title': '2018 College Football Playoff National Championship', 'start_paragraph_id': 20, 'start_character': 0, 'end_paragraph_id': 20, 'end_character': 389, 'bleu_score': 0.9663744727315161, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11277630199039526332}, 'section': 'Section::::Broadcasting.\n'}]}]