Question: what is the metal thing they put on boxers faces
[{'answer': 'Enswell', 'provenance': [{'wikipedia_id': '4379183', 'title': 'Cutman', 'start_paragraph_id': 9, 'start_character': 134, 'end_paragraph_id': 9, 'end_character': 141, 'bleu_score': 1.0, 'section': 'Section::::Treatments.:Swelling.\n'}]}, {'provenance': [{'wikipedia_id': '4379183', 'title': 'Cutman', 'start_paragraph_id': 17, 'start_character': 0, 'end_paragraph_id': 17, 'end_character': 299, 'bleu_score': 0.9632870032952191, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 223188326761624426}, 'section': 'Section::::Tools.:Equipment.\n'}]}]