Question: where was the ncaa football championship game played 2018
[{'answer': 'Atlanta , Georgia', 'provenance': [{'wikipedia_id': '48966894', 'title': '2018 College Football Playoff National Championship', 'start_paragraph_id': 4, 'start_character': 29, 'end_paragraph_id': 4, 'end_character': 49, 'bleu_score': 1.0, 'section': 'Section::::Background.\n'}]}]