Question: Which pole driver of 1989 Portuguese Grand Prix was also the first driver of 1993 European Grand Prix ?
SPARQL query:
PREFIX res: <http://dbpedia.org/resource/>
PREFIX prop: <http://dbpedia.org/property/>
PREFIX onto: <http://dbpedia.org/ontology/>
 SELECT DISTINCT ?uri WHERE { res:1993_European_Grand_Prix prop:firstDriver ?uri. res:1989_Portuguese_Grand_Prix onto:poleDriver ?uri}