メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.348314809506 43.121858440917, 141.348863296692 43.1219361616924, 141.348834527404 43.122123636602, 141.348654660969 43.1229900534407, 141.348614116158 43.1232209682556, 141.3485704814 43.1234138119233, 141.348526874458 43.1237485045565, 141.347294731823 43.1234005635378, 141.347347828303 43.1232110305245, 141.347381331476 43.1232112936345, 141.347385498634 43.1231759522505, 141.347487310872 43.1228204090393, 141.347624847205 43.1223073355373, 141.347758798209 43.1217833313152, 141.348314809506 43.121858440917)) ^^http://www.opengis.net/ont/geosparql#wktLiteral