Question: where is iron mined in the united states
[{'answer': 'Michigan', 'provenance': [{'wikipedia_id': '47313120', 'title': 'Iron mining in the United States', 'start_paragraph_id': 1, 'start_character': 282, 'end_paragraph_id': 1, 'end_character': 290, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Minnesota', 'provenance': [{'wikipedia_id': '47313120', 'title': 'Iron mining in the United States', 'start_paragraph_id': 1, 'start_character': 292, 'end_paragraph_id': 1, 'end_character': 301, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Utah', 'provenance': [{'wikipedia_id': '47313120', 'title': 'Iron mining in the United States', 'start_paragraph_id': 1, 'start_character': 307, 'end_paragraph_id': 1, 'end_character': 311, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '47313120', 'title': 'Iron mining in the United States', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 586, 'bleu_score': 0.9808590314834971, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2499109555564896158}, 'section': 'Section::::Abstract.'}]}]