Question: a periodontal disease that is restricted to the gums is an inflammation called
[{'answer': 'Periodontitis', 'provenance': [{'wikipedia_id': '129139', 'title': 'Periodontal disease', 'start_paragraph_id': 16, 'start_character': 0, 'end_paragraph_id': 16, 'end_character': 13, 'bleu_score': 1.0, 'section': 'Section::::Signs and symptoms.:Associated conditions.\n'}]}]