# filename: ex439.rq

PREFIX owl:  <http://www.w3.org/2002/07/owl#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>

SELECT * 
WHERE 
{ 
  { ?class a owl:Class }
  UNION
  { ?class a rdfs:Class }

  ?class a ?classType
}