PREFIX   ex:  <http://example.org/>
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 ?p ?v
WHERE { 
	?p rdf:type owl:ObjectProperty . 
	ex:John ?p ?v .
}
