Question: when did loyola chicago join the missouri valley
[{'answer': '2013', 'provenance': [{'wikipedia_id': '660948', 'title': 'Missouri Valley Conference', 'start_paragraph_id': 55, 'start_character': 32, 'end_paragraph_id': 55, 'end_character': 36, 'bleu_score': 1.0, 'section': 'Section::::National team titles by institution.\n'}]}]