Chris@0: 
Chris@0: PREFIX vamp: <http://purl.org/ontology/vamp/>
Chris@0: PREFIX examples: <http://vamp-plugins.org/rdf/plugins/vamp-example-plugins#>
Chris@0: 
Chris@0: SELECT ?output_id ?output_type ?feature_type ?event_type ?unit
Chris@0: FROM <http://vamp-plugins.org/rdf/plugins/vamp-example-plugins>
Chris@0: 
Chris@0: WHERE {
Chris@0:       ?plugin a vamp:Plugin .
Chris@0:       ?plugin vamp:identifier "percussiononsets" .
Chris@0:       ?plugin vamp:output_descriptor ?output .
Chris@0:       ?output vamp:identifier ?output_id .
Chris@0:       ?output a ?output_type .
Chris@0:       OPTIONAL { ?output vamp:computes_feature_type ?feature_type } .
Chris@0:       OPTIONAL { ?output vamp:computes_event_type ?event_type } .
Chris@0:       OPTIONAL { ?output vamp:unit ?unit } .
Chris@0: }
Chris@0: