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Geo and INSPIRE
INSPIRE uses GML. The first version of GML provided an RDF-serialization in addition to a mandatory XML-serialization. Later versions only supported XML, but still specify an object structure which can be mapped esily to RDF and OWL.
Recently the importance of XML is vanishing, while Linked Data leads to increased interest in RDF. For those reasons there are efforts to open INSPIRE and GML for the Semantic Web. RDF vocabularies corresponding to GML are being developed.
"Semantic access to INSPIRE, How to publish and query advanced GML data", Sven Tschirner, Ansgar Scherp , and Steffen Staab, http://ceur-ws.org/Vol-798/paper7.pdf
"From Geo-Data to Linked Data: Automated Transformation from GML to RDF" Linda van den Brink (Geonovum), Paul Janssen (Geonovum), Wilko Quak (TU-Delft): http://www.pilod.nl/wiki/Boek/BrinkEtAl-GML2RDF
Very interesting is the material produced by the W3C Workshop "Linking Geospatial Data", 5th - 6th March 2014, Campus London, Shoreditch: http://www.w3.org/2014/03/lgd/agenda