Question: what type of tissue is the uppermost layer of the skin
[{'answer': 'epidermis', 'provenance': [{'wikipedia_id': '333119', 'title': 'Epidermis', 'start_paragraph_id': 1, 'start_character': 4, 'end_paragraph_id': 1, 'end_character': 13, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '333119', 'title': 'Epidermis', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 406, 'bleu_score': 0.5206852059442411, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10138222971552917209}, 'section': 'Section::::Abstract.'}]}]