for (OWLClass owlClass : this.classes){
Set<OWLDescription> subClasses = owlClass.getSubClasses(tbox);
this.sortedList.add(new OWLSubclass(owlClass,subClasses.size()));
}
manager.removeOntology(tboxURI);
} catch (OWLOntologyCreationException e) {
e.printStackTrace();
// Provide a default order
for (OWLClass owlClass : this.classes){
this.sortedList.add(new OWLSubclass(owlClass,0));