# filename: ex445.rq

PREFIX rdf:  <http://www.w3.org/1999/02/22-rdf-syntax-ns#> 
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX owl:  <http://www.w3.org/2002/07/owl#>

SELECT *
WHERE
{
  ?propClass rdfs:subClassOf+ rdf:Property . 
  ?property a ?propClass . 
}