Question: when is the national championship game for football
[{'answer': 'January 8 , 2018', 'provenance': [{'wikipedia_id': '48966894', 'title': '2018 College Football Playoff National Championship', 'start_paragraph_id': 20, 'start_character': 46, 'end_paragraph_id': 20, 'end_character': 62, 'bleu_score': 1.0, 'section': 'Section::::Broadcasting.\n'}]}]