Question: For how many PMs did the politician work, whose successor was Kingsley Wood?
SPARQL query:
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX res: <http://dbpedia.org/resource/>
PREFIX prop: <http://dbpedia.org/property/>
PREFIX onto: <http://dbpedia.org/ontology/>
SELECT DISTINCT COUNT(?uri) WHERE { <http://dbpedia.org/resource/Kingsley_Wood> onto:successor ?x . ?x prop:primeminister ?uri . ?x rdf:type onto:OfficeHolder}