Question: who plays the first game of the nfl regular season
[{'answer': 'the Kansas City Chiefs', 'provenance': [{'wikipedia_id': '44726936', 'title': '2017 NFL season', 'start_paragraph_id': 1, 'start_character': 138, 'end_paragraph_id': 1, 'end_character': 160, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'the defending Super Bowl LI champion New England Patriots'}, {'provenance': [{'wikipedia_id': '44726936', 'title': '2017 NFL season', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 300, 'bleu_score': 0.545600802266006, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16263961802266397519}, 'section': 'Section::::Abstract.'}]}]