Question: How many pole drivers have been there in grand prixes where first driver was Damon Hill?
SPARQL query:
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX res: <http://dbpedia.org/resource/>
PREFIX onto: <http://dbpedia.org/ontology/>
SELECT DISTINCT COUNT(?uri) WHERE { ?x onto:firstDriver <http://dbpedia.org/resource/Damon_Hill> . ?x onto:poleDriver ?uri . ?uri rdf:type onto:FormulaOneRacer}