Question: when did ncaa allow freshmen to play football
[{'answer': 'This season', 'provenance': [{'wikipedia_id': '14855220', 'title': '1972 NCAA University Division football season', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 11, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '14855220', 'title': '1972 NCAA University Division football season', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 483, 'bleu_score': 0.9292791734895691, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10396861312833442866}, 'section': 'Section::::Abstract.'}]}]