Question: what causes cracked skin at the corners of your mouth
[{'answer': 'infection', 'provenance': [{'wikipedia_id': '3392594', 'title': 'Angular cheilitis', 'start_paragraph_id': 2, 'start_character': 35, 'end_paragraph_id': 2, 'end_character': 44, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'irritation', 'provenance': [{'wikipedia_id': '3392594', 'title': 'Angular cheilitis', 'start_paragraph_id': 2, 'start_character': 46, 'end_paragraph_id': 2, 'end_character': 56, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'allergies', 'provenance': [{'wikipedia_id': '3392594', 'title': 'Angular cheilitis', 'start_paragraph_id': 2, 'start_character': 61, 'end_paragraph_id': 2, 'end_character': 70, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3392594', 'title': 'Angular cheilitis', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10558638570347239844}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3392594', 'title': 'Angular cheilitis', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 602, 'bleu_score': 0.977897140678983, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10558638570347239844}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3392594', 'title': 'Angular cheilitis', 'section': 'Section::::Abstract.', 'start_paragraph_id': 2, 'end_paragraph_id': 2, 'meta': {'evidence_span': ['Angular cheilitis can be caused by infection, irritation, or allergies. Infections include by fungi such as "Candida albicans" and bacteria such as "Staph. aureus". Irritants include poorly fitting dentures, licking the lips or drooling, mouth breathing resulting in a dry mouth, sun exposure, overclosure of the mouth, smoking, and minor trauma. Allergies may include substances like toothpaste, makeup, and food. Often a number of factors are involved. Other factors may include poor nutrition or poor immune function. Diagnosis may be helped by testing for infections and patch testing for allergies.', 'Angular cheilitis can be caused by infection, irritation, or allergies', 'irritation, or allergies']}}]}]