Unnamed

PREFIX foaf: <http://xmlns.com/foaf/0.1/>
CONSTRUCT {
  ?person a foaf:Person ;
          foaf:name ?name ;
          foaf:homepage ?homepage ;
          foaf:mbox ?mbox .
} WHERE {
  {
    SELECT ?person WHERE { ?person a foaf:Person } LIMIT 5
  }
  ?person foaf:name ?name ;
          foaf:homepage ?homepage .
  OPTIONAL { ?person foaf:mbox ?mbox }        
}