PREFIX sioc: PREFIX dcterms: PREFIX mebase: PREFIX mecontrib: PREFIX rdf: SELECT ?name (COUNT(?workflow) as ?no_workflows) WHERE{ ?workflow rdf:type mecontrib:Workflow ; sioc:has_owner ?owner ; mebase:has-content-type ?ct . ?owner sioc:name ?name . ?ct dcterms:title ?ct_title ; FILTER regex(?ct_title,'^taverna','i') } GROUP by ?owner ORDER BY ?no_workflows