Question: where did the iron on mars come from
[{'answer': 'titanium enriched magnetite', 'provenance': [{'wikipedia_id': '14548654', 'title': 'Mars surface color', 'start_paragraph_id': 6, 'start_character': 482, 'end_paragraph_id': 6, 'end_character': 509, 'bleu_score': 1.0, 'section': 'Section::::Reason for red and its extensiveness.\n'}]}, {'provenance': [{'wikipedia_id': '14548654', 'title': 'Mars surface color', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 625, 'bleu_score': 0.8950582352609551, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4520117282950509502}, 'section': 'Section::::Reason for red and its extensiveness.\n'}]}]