PREFIX foaf: <http://xmlns.com/foaf/0.1/>
PREFIX dc: <http://purl.org/dc/elements/1.1/>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX : <http://deductions.sf.net#>

# find all guys that are the dc:creator of nothing
# this SPARQL query is the equivalent of the N3 rule dpbl.n3
# due to problems in the server, or my misunderstanding of SPARQL,
# il only returns one triple, about 
CONSTRUCT {
  ?PERSON :has_name_but_no_creation ?N.
}
WHERE {
  ?PERSON foaf:name ?N.
  ?WORK dc:creator ?P.
  
  FILTER ( ?PERSON != ?P)
}