メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.352552198204 43.105206700949, 141.352445671022 43.1056260730175, 141.351093737445 43.1054588093911, 141.351203708334 43.1050275773778, 141.351297072273 43.1046095780187, 141.352645330343 43.1047908800366, 141.352552198204 43.105206700949)) ^^http://www.opengis.net/ont/geosparql#wktLiteral