Question: what kind of magnet is a piece of lodestone
[{'answer': 'magnetite', 'provenance': [{'wikipedia_id': '211177', 'title': 'Lodestone', 'start_paragraph_id': 1, 'start_character': 59, 'end_paragraph_id': 1, 'end_character': 68, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '211177', 'title': 'Lodestone', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 439, 'bleu_score': 0.8431006187347451, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12119039448628380684}, 'section': 'Section::::Abstract.'}]}]