PREFIX st:   <http://ns.inria.fr/sparql-template/>
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX owl: <http://www.w3.org/2002/07/owl#>
PREFIX dcterms: <http://purl.org/dc/terms/>
PREFIX dc: <http://purl.org/dc/elements/1.1/>
PREFIX fun: <http://w3id.org/sparql-generate/fn/>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX skos: <http://www.w3.org/2004/02/skos/core#>
PREFIX obo: <http://purl.obolibrary.org/obo/>
PREFIX swrl: <http://www.w3.org/2003/11/swrl#>
PREFIX prov: <http://www.w3.org/ns/prov#>
 
BASE <https://saref.etsi.org/documentation/>
PREFIX iter: <http://w3id.org/sparql-generate/iter/>

TEMPLATE  <classLabel.rqg>( ?ontology, ?lang , ?class ) {
  str( ?langLabel ) 
} ITERATOR iter:call-select(<getLabel.rqg>, ?class, ?lang) AS ?langLabel