Question: where are the bridges of madison county located
[{'answer': 'Iowa', 'provenance': [{'wikipedia_id': '781863', 'title': 'The Bridges of Madison County', 'start_paragraph_id': 1, 'start_character': 266, 'end_paragraph_id': 1, 'end_character': 270, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '781863', 'title': 'The Bridges of Madison County', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 625, 'bleu_score': 0.7873066142490781, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 483268118232100747}, 'section': 'Section::::Abstract.'}]}]