PREFIX owl: PREFIX dblp: PREFIX rdfs: PREFIX rdf: PREFIX datacite: PREFIX literal: SELECT ?category (SUM(?count) as ?num_total) (100 * SUM(?count) / MAX(?total) as ?percent) WHERE { {{SELECT * WHERE {{ SELECT ?p (COUNT(?p) AS ?count) WHERE { ?s ?p ?o } GROUP BY ?p } BIND (?p = datacite:hasIdentifier || ?p = datacite:hasLiteralValue || ?p = datacite:usesIdentifierScheme || ?p = literal:hasLiteralValue || ?p = dblp:hasSignature || REGEX(?p, "