Which stratovolcano in the Philippines has not erupted after its 1991 eruption?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'INTERNAL', 'name_': 'Q6173448', 'id': 0, 'label': 'Wikipedia:Vital articles/Level/4'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q928', 'id': 1, 'label': 'Philippines'}, {'type': 'INTERNAL', 'name_': 'Q15647814', 'id': 2, 'label': 'Wikimedia administration category'}, {'type': 'INTERNAL', 'name_': 'Q4006', 'id': 3, 'label': 'map'}, {'type': 'INTERNAL', 'name_': 'Q8397801', 'id': 4, 'label': 'Category:Eastern Visayas articles missing geocoordinate data'}, {'type': 'INTERNAL', 'name_': 'Q23036813', 'id': 5, 'label': 'Category:Pages using Wikidata property P1451'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q1451', 'id': 6, 'label': 'Pinatubo'}, {'type': 'INTERNAL', 'name_': 'Q84057264', 'id': 7, 'label': 'Category:Maps of Mount Pinatubo'}], 'links': [{'name_': 'P5008', 'source': 1, 'target': 0, 'label': 'on focus list of Wikimedia project'}, {'name_': 'P17', 'source': 1, 'target': 1, 'label': 'country'}, {'name_': 'P5008', 'source': 3, 'target': 0, 'label': 'on focus list of Wikimedia project'}, {'name_': 'P971', 'source': 4, 'target': 1, 'label': 'category combines topics'}, {'name_': 'P31', 'source': 4, 'target': 2, 'label': 'instance of'}, {'name_': 'P31', 'source': 5, 'target': 2, 'label': 'instance of'}, {'name_': 'P1659', 'source': 5, 'target': 6, 'label': 'related property'}, {'name_': 'P971', 'source': 7, 'target': 3, 'label': 'category combines topics'}, {'name_': 'P971', 'source': 7, 'target': 6, 'label': 'category combines topics'}]}