メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.362015018914 43.1181808881736, 141.361932685587 43.118490652778, 141.361843410547 43.1184634465283, 141.36049025767 43.1183016655852, 141.360564721513 43.1179870502058, 141.360644244152 43.1177008152653, 141.360817947562 43.1170112985918, 141.362274990132 43.1172030639456, 141.362096683215 43.117873632328, 141.362015018914 43.1181808881736)) ^^http://www.opengis.net/ont/geosparql#wktLiteral