メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.058933148281 34.878200175739, 137.060145742797 34.8781894779122, 137.060164170772 34.8787199625755, 137.060764938897 34.8796063345404, 137.060890742185 34.8805575806892, 137.060531769032 34.8805709327579, 137.058768284439 34.8806239721042, 137.058655865295 34.8800117779899, 137.058552556215 34.8794845982389, 137.058318624487 34.8782056181915, 137.058933148281 34.878200175739)) ^^http://www.opengis.net/ont/geosparql#wktLiteral