Question: how far is ames iowa from des moines iowa
[{'answer': 'approximately 30 miles'}, {'provenance': [{'wikipedia_id': '1298', 'title': 'Ames, Iowa', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 311, 'bleu_score': 0.810835951421352, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12645032472782629337}, 'section': 'Section::::Abstract.'}]}]