Question: How many different pole drivers are there, of the GPs when Renault was the first team?
SPARQL query:
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX prop: <http://dbpedia.org/property/>
PREFIX onto: <http://dbpedia.org/ontology/>
SELECT DISTINCT COUNT(?uri) WHERE { ?x prop:firstTeam <http://dbpedia.org/resource/Renault_in_Formula_One> . ?x onto:poleDriver ?uri  . ?uri rdf:type onto:FormulaOneRacer}