SPARQL

prefix db: <http://dbpedia.org/ontology/>
 prefix dcmi: <http://purl.org/dc/dcmitype/>
 prefix dct: <http://purl.org/dc/terms/>
 prefix foaf: <http://xmlns.com/foaf/0.1/>
 prefix org: <http://exemple.teluq.ca/ressources/>
 prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
 prefix xsd: <http://www.w3.org/2001/XMLSchema#>
 CONSTRUCT {
 ?s foaf:know ?familyName
 }
 where{
 SELECT ?s ?familyName WHERE
 {
 ?s foaf:pastProject ?pastProject;
 foaf:familyName ?familyName
 }
 }