OWLOntologyManager mgr = OWLManager.createOWLOntologyManager();
OWLDataFactory factory = mgr.getOWLDataFactory();
OWLAnnotationProperty wp = factory.getOWLAnnotationProperty(IRI.create(label));
AnnotationProperty jp = null;
try{
jp = j2o.AnnotationPropOwlToJena(wp, RDFXML);
if(jp==null){
fail("Some errors occur");
}else{
assertEquals(wp.getIRI().toURI().toString(), jp.getURI().toString());
}