Question: what is the oldest football team in the nfl
[{'answer': 'The Green Bay Packers', 'provenance': [{'wikipedia_id': '19333610', 'title': 'History of the National Football League', 'start_paragraph_id': 10, 'start_character': 144, 'end_paragraph_id': 10, 'end_character': 165, 'bleu_score': 1.0, 'section': 'Section::::Birth of a new league.\n'}]}, {'provenance': [{'wikipedia_id': '19333610', 'title': 'History of the National Football League', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 757, 'bleu_score': 0.8534460091257591, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17812790417646816021}, 'section': 'Section::::Abstract.'}]}]