PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> PREFIX doc: <http://demo.openlinksw.com/schemas/doc#> PREFIX bibo: <http://purl.org/ontology/bibo/> SELECT * WHERE { ?file rdf:type doc:File . ?file rdf:type bibo:Article . ?file bibo:identifier ?ident . ?file bibo:author ?author . ?file doc:belongs_to_collection ?collection . ?file doc:type ?type . ?file bibo:presentedAt ?presented . ?file bibo:url ?url . }