Question: when was the university of iowa hospital built
[{'answer': '1898', 'provenance': [{'wikipedia_id': '2631157', 'title': 'University of Iowa Hospitals and Clinics', 'start_paragraph_id': 6, 'start_character': 204, 'end_paragraph_id': 6, 'end_character': 208, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '2631157', 'title': 'University of Iowa Hospitals and Clinics', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 447, 'bleu_score': 0.8797691962223391, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2207669236577323750}, 'section': 'Section::::History.\n'}]}]