Diplay all elements included in a biological process

Statement: 

Display all classes included in this endpoint A limit of results per page $number$ (e.g., 12)

Query: 
select distinct ?biological_process ?biological_process_label where { ?biological_process ?p <http://www.w3.org/2002/07/owl#Class> . ?biological_process<http://www.geneontology.org/formats/oboInOwl#hasOBONamespace>"biological_process" . ?biological_process<http://www.w3.org/2000/01/rdf-schema#label>?biological_process_label . } limit ??number