Question: where did alex karev go to medical school
[{'answer': 'University of Iowa', 'provenance': [{'wikipedia_id': '7687023', 'title': 'Alex Karev', 'start_paragraph_id': 7, 'start_character': 110, 'end_paragraph_id': 7, 'end_character': 128, 'bleu_score': 1.0, 'section': 'Section::::Storylines.\n'}]}, {'provenance': [{'wikipedia_id': '7687023', 'title': 'Alex Karev', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 791, 'bleu_score': 0.9844346099707091, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9711743957067297206}, 'section': 'Section::::Storylines.\n'}]}]