How to use RDF:label in protege

Question

For the RDF labels I'm trying something really simple to show all the labels in my ontology, but even that its not working. Do you have any idea how I need to write any rdfs:label

SELECT?subject?label WHERE {?subject rdfs:label?label }

Answer 1

Try this:

SELECT ?subject ?label WHERE { ?subject <http://www.w3.org/2000/01/rdf-schema#label> ?label }

You could also maybe use a prefix like so:

PREFIX rdfs:    <http://www.w3.org/2000/01/rdf-schema#>

SELECT ?subject ?label WHERE { ?subject rdfs:label ?label }

You can try out the queries by using the DBPedia endpoint:

https://dbpedia.org/sparql

To use existing predicates from other graphs you first have to include the reference to the predicate. Otherwise the query cannot find the correct predicate.