Question: when was the congress hotel in chicago built
[{'answer': '1893', 'provenance': [{'wikipedia_id': '32972996', 'title': 'Congress Plaza Hotel', 'start_paragraph_id': 2, 'start_character': 382, 'end_paragraph_id': 2, 'end_character': 386, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '32972996', 'title': 'Congress Plaza Hotel', 'start_paragraph_id': 2, 'start_character': 4, 'end_paragraph_id': 2, 'end_character': 729, 'bleu_score': 0.787566803640102, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13998585623373438509}, 'section': 'Section::::History.\n'}]}]