メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.350448523774 43.0303135272059, 141.350429539448 43.030464728955, 141.350410563654 43.0306547531363, 141.350346705806 43.0311609818059, 141.349535177862 43.0311030456078, 141.349111460041 43.0310759388089, 141.348351865693 43.031019880411, 141.348416399776 43.0305209727588, 141.348438054768 43.0303251330187, 141.348455072985 43.0301711029598, 141.348510260046 43.0296752867173, 141.349431482227 43.0297433062507, 141.350522986837 43.0298161031681, 141.350448523774 43.0303135272059)) ^^http://www.opengis.net/ont/geosparql#wktLiteral