Question: what is the stuff in a sebaceous cyst
[{'answer': 'keratin', 'provenance': [{'wikipedia_id': '1258603', 'title': 'Sebaceous cyst', 'start_paragraph_id': 4, 'start_character': 40, 'end_paragraph_id': 4, 'end_character': 47, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1258603', 'title': 'Sebaceous cyst', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 454, 'bleu_score': 0.9699161750394991, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16008803473310310556}, 'section': 'Section::::Abstract.'}]}]