What was the deadliest volcanic eruption?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'INTERNAL', 'name_': 'Q19180675', 'id': 0, 'label': 'Small Brockhaus and Efron Encyclopedic Dictionary'}, {'type': 'INTERNAL', 'name_': 'Q524', 'id': 1, 'label': 'Mount Vesuvius'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q7692360', 'id': 2, 'label': 'Types of volcanic eruptions'}, {'type': 'INTERNAL', 'name_': 'Q188586', 'id': 3, 'label': 'Kingdom of Sicily'}, {'type': 'INTERNAL', 'name_': 'Q1903', 'id': 4, 'label': 'Catania'}], 'links': [{'name_': 'P1343', 'source': 1, 'target': 0, 'label': 'described by source'}, {'name_': 'P793', 'source': 1, 'target': 2, 'label': 'significant event'}, {'name_': 'P1343', 'source': 3, 'target': 0, 'label': 'described by source'}, {'name_': 'P36', 'source': 3, 'target': 4, 'label': 'capital'}]}