Question: where do calluses on your feet come from
[{'answer': 'repeated friction', 'provenance': [{'wikipedia_id': '249922', 'title': 'Callus', 'start_paragraph_id': 1, 'start_character': 66, 'end_paragraph_id': 1, 'end_character': 83, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'other irritation', 'provenance': [{'wikipedia_id': '249922', 'title': 'Callus', 'start_paragraph_id': 1, 'start_character': 98, 'end_paragraph_id': 1, 'end_character': 114, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'pressure', 'provenance': [{'wikipedia_id': '249922', 'title': 'Callus', 'start_paragraph_id': 1, 'start_character': 85, 'end_paragraph_id': 1, 'end_character': 93, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '249922', 'title': 'Callus', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 568, 'bleu_score': 0.65082904371071, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16873917634528991094}, 'section': 'Section::::Abstract.'}]}]