Question: iron ore is found in which state in nigeria
[{'answer': 'Kogi State', 'provenance': [{'wikipedia_id': '16897370', 'title': 'Mining industry of Nigeria', 'start_paragraph_id': 19, 'start_character': 94, 'end_paragraph_id': 19, 'end_character': 104, 'bleu_score': 1.0, 'section': 'Section::::Iron Ore.\n'}]}, {'provenance': [{'wikipedia_id': '16897370', 'title': 'Mining industry of Nigeria', 'start_paragraph_id': 19, 'start_character': 0, 'end_paragraph_id': 19, 'end_character': 104, 'bleu_score': 0.8970773746801091, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6762939197497978069}, 'section': 'Section::::Iron Ore.\n'}]}]