I found some examples of these when checking mapping errors, details are in the attached filevvagr wrote:The following SPARQL query is looking in PCA RDL for RDS-entities which have R-numbers assigned via rdsWipEquivalent predicate but have no other data about them at the endpoint (no type, no label, nothing).There are 13403 such entities. See URIs in attached file.Code: Select all
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> PREFIX RDL: <http://posccaesar.org/rdl/> SELECT ?y WHERE { GRAPH <http://irm.dnv.com/ontologies/iring.map> { ?x RDL:rdsWipEquivalent ?y .} OPTIONAL { ?y ?p ?z } . FILTER (!bound(?z)) }
Keith