Question: when did the wild card start in football
[{'answer': '1970', 'provenance': [{'wikipedia_id': '3533439', 'title': 'Wild card (sports)', 'start_paragraph_id': 8, 'start_character': 284, 'end_paragraph_id': 8, 'end_character': 288, 'bleu_score': 1.0, 'section': 'Section::::North America.\n'}]}, {'provenance': [{'wikipedia_id': '3533439', 'title': 'Wild card (sports)', 'start_paragraph_id': 30, 'start_character': 0, 'end_paragraph_id': 30, 'end_character': 1007, 'bleu_score': 0.9884053071617651, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5122611671000851524}, 'section': 'Section::::North America.:National Football League.:Background.\n'}]}]