# call
# jena -q -pellet -il RDF/XML -qf lsr-query.sparql

PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX owl: <http://www.w3.org/2002/07/owl#>
PREFIX mars: <http://www.semwebtech.org/mars/2006/mars#>
PREFIX lsr: <http://www.semwebtech.org/mars/2006/lsr#>

SELECT ?L ?S ?T ?URL
FROM <file:mars-language-and-service-types.rdf>
FROM <file:services-ontology.rdf>
FROM <file:lsr.rdf>
WHERE {
 ?L rdf:type mars:Language .
 ?L mars:is-implemented-by ?S .
 ?S lsr:has-task-description ?TD .
 ?TD lsr:describes-task ?T .
 ?TD lsr:provided-at ?URL
 }