Question: who played the first thanksgiving day football game
[{'answer': 'Yale and Princeton', 'provenance': [{'wikipedia_id': '7931622', 'title': 'NFL on Thanksgiving Day', 'start_paragraph_id': 4, 'start_character': 230, 'end_paragraph_id': 4, 'end_character': 248, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '7931622', 'title': 'NFL on Thanksgiving Day', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 684, 'bleu_score': 0.9829771687435411, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8345493295597045849}, 'section': 'Section::::History.\n'}]}]