メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.363462386977 43.1173536931108, 141.364068980526 43.1174238633683, 141.363745712834 43.1187390355934, 141.363147487698 43.1186535954709, 141.361932685587 43.118490652778, 141.362015018914 43.1181808881736, 141.362096683215 43.117873632328, 141.362274990132 43.1172030639456, 141.363462386977 43.1173536931108)) ^^http://www.opengis.net/ont/geosparql#wktLiteral