Question: where does iron come from in the world
[{'answer': 'Iron ores', 'provenance': [{'wikipedia_id': '145352', 'title': 'Iron ore', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 9, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '145352', 'title': 'Iron ore', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 363, 'bleu_score': 0.660776704777833, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17187960570155596786}, 'section': 'Section::::Abstract.'}]}]