http://www.w3.org/2000/01/rdf-schema#subClassOf

used by 43:

• a-collection-of-papers-for-lrec2014-and-related-workshops
• aksworg
• apr-register-of-regional-development-measures-and-incentives
• asit
• data-gov-uk-time-intervals
• dbpedia-it
• dimitros-net
• epo
• event-media
• fao-geopolitical-ontology
• fatal-traffic-accidents-in-greek-roads
• fiesta
• geospecies
• gold
• hellenic-fire-brigade
• hellenic-police
• higher-education-reference-ontology
• icane
• ifpri-linked-open-data-global-hunger-index
• iris2
• isocat-metadata
• lexinfo
• lime
• linked-open-ipa
• lod2
• lremap-ri
• meducator
• mexico
• mincats
• naturopathy2
• prelex
• productontology
• reference-data-gov-uk
• regional-development-measures-and-incentives-data-8-and-data-11
• rkb-explorer-epsrc
• rkb-explorer-webconf
• rzs-register-of-teritorial-units
• semantic_bible
• southampton-ac-uk-room-features
• taxonconcept
• usgs-feature-definition-vocabulary
• vivo-cu-boulder
• ysa