Question: when was the art institute of chicago founded
[{'answer': '1879', 'provenance': [{'wikipedia_id': '8758450', 'title': 'Art Institute of Chicago', 'start_paragraph_id': 1, 'start_character': 41, 'end_paragraph_id': 1, 'end_character': 45, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '8758450', 'title': 'Art Institute of Chicago', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 758, 'bleu_score': 0.9831208473513011, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4785557807615388374}, 'section': 'Section::::Abstract.'}]}]