メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.331453205737 43.0616927038116, 141.33165078559 43.0617188361782, 141.332424094114 43.0618257562719, 141.332258426372 43.0624312975037, 141.332096908035 43.0630349028789, 141.331721731902 43.0629798468982, 141.331352633869 43.0629417166647, 141.330535256689 43.0628432260686, 141.330692314259 43.0622374773598, 141.330699336936 43.0622104571834, 141.330842469429 43.0616120508191, 141.331111173073 43.0616475473344, 141.331453205737 43.0616927038116)) ^^http://www.opengis.net/ont/geosparql#wktLiteral