//////////////////////////////
 // PROPERTY ASSERTION METHODS//
 //////////////////////////////
 public boolean assertPropertyInstance(
     String comboBoxObjectPropertyEntry, String room1Hash, String room2Hash) {
   OWLObjectProperty objProp =
       OWLFactory.getOWLObjectProperty(
           IRI.create(propEntryNametoPropEntryIRI.get(comboBoxObjectPropertyEntry)));
   OWLIndividual room1Individual =
       OWLFactory.getOWLNamedIndividual(':' + room1Hash, topIxPrefixManager);
   OWLIndividual room2Individual =
       OWLFactory.getOWLNamedIndividual(':' + room2Hash, topIxPrefixManager);
   manager.addAxiom(
       topIxOnt,
       OWLFactory.getOWLObjectPropertyAssertionAxiom(objProp, room1Individual, room2Individual));
   return true;
 }
  public boolean assertRoomIndividual(
      String roomName, String roomIndividualHash, String roomIndividualAnnotation) {
    OWLClassExpression tempClassExpression =
        OWLFactory.getOWLClass(
            IRI.create(
                roomToIRI.get(
                    roomName))); // retrieves the Room Class IRI fron the roomToIRI map, using
                                 // roomID as a key.
    OWLIndividual tempIndividual =
        OWLFactory.getOWLNamedIndividual(':' + roomIndividualHash, topIxPrefixManager);

    manager.addAxiom(
        topIxOnt, OWLFactory.getOWLClassAssertionAxiom(tempClassExpression, tempIndividual));
    manager.addAxiom(
        topIxOnt,
        OWLFactory.getOWLAnnotationAssertionAxiom(
            OWLFactory.getOWLAnnotationProperty(
                IRI.create(
                    topIxOnt.getOntologyID().getOntologyIRI().toString() + '#' + "individualName")),
            IRI.create(
                topIxOnt.getOntologyID().getOntologyIRI().toString() + '#' + roomIndividualHash),
            OWLFactory.getOWLLiteral(String.format(roomIndividualAnnotation))));
    return true;
  }