Question: when did texas a&m join the sec conference
[{'answer': '2012', 'provenance': [{'wikipedia_id': '79371', 'title': 'Southeastern Conference', 'start_paragraph_id': 8, 'start_character': 14, 'end_paragraph_id': 8, 'end_character': 18, 'bleu_score': 1.0, 'section': 'Section::::Member universities.:Current members.\n'}]}]