@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix dc: <http://purl.org/dc/elements/1.1/> .
@prefix sd: <http://darq.sf.net/dose/0.1#> .
@prefix sparql: <http://kasei.us/2008/04/sparql#> .

sparql:extensionFunction a rdf:Property ;
	rdfs:domain sd:Service ;
	rdfs:range sparql:Function ;
	dc:description "Indicates that a SPARQL endpoint supports a specific extension function." .

sparql:sparqlExtension a rdf:Property ;
	rdfs:domain sd:Service ;
	dc:description "Indicates that a SPARQL endpoint supports a specific language extension." .

sparql:Function a rdfs:Class ;
	dc:description "Extension functions that may be called from a SPARQL query." .