Question: what was the capital of iowa before des moines
[{'answer': 'Iowa City', 'provenance': [{'wikipedia_id': '9163', 'title': 'Des Moines, Iowa', 'start_paragraph_id': 24, 'start_character': 244, 'end_paragraph_id': 24, 'end_character': 253, 'bleu_score': 1.0, 'section': 'Section::::History.:Era of growth.\n'}]}, {'provenance': [{'wikipedia_id': '9163', 'title': 'Des Moines, Iowa', 'start_paragraph_id': 24, 'start_character': 0, 'end_paragraph_id': 24, 'end_character': 388, 'bleu_score': 0.9712154609069981, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2301775813208032886}, 'section': 'Section::::History.:Era of growth.\n'}]}]