Question: Who are the people which were the influencer of the person, who influenced Costanzo Preve ?
SPARQL query:
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX onto: <http://dbpedia.org/ontology/>
SELECT DISTINCT ?uri WHERE { <http://dbpedia.org/resource/Costanzo_Preve> onto:influencedBy ?x . ?x onto:influencedBy ?uri  . ?x rdf:type onto:Person}