protected function removeLanguageFromOntology()
    {
        
        $this->outVerbose("Removing RDF language description '" . $this->options['language'] . "' from ontology...");
        $taoNS = 'http://www.tao.lu/Ontologies/TAO.rdf#';
        $expectedDescriptionUri = $taoNS . 'Lang' . $this->options['language'];
        $lgResource = new core_kernel_classes_Resource($expectedDescriptionUri);
        
        if (true === $lgResource->exists()) {
            $lgResource->delete();
            $this->outVerbose("RDF language description '" . $this->options['language'] . "' successfully removed.");
        }else{
            $this->outVerbose("RDF language description '" . $this->options['language'] . "' not found but considered removed.");
        }
        
    }