メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.902656694808 43.4696476398572, 141.902376722532 43.4696735868637, 141.902192384904 43.469658121096, 141.902222569022 43.4696186893629, 141.90231860294 43.4693830766047, 141.902355262532 43.4690747094541, 141.902356600086 43.4688424680064, 141.902214706914 43.4681265262142, 141.902150341526 43.4678855417853, 141.902811147309 43.4677877492588, 141.902864814168 43.4679839042314, 141.903222438037 43.4694820097839, 141.903264039718 43.4696145919085, 141.902945119044 43.4696172511118, 141.902656694808 43.4696476398572)) ^^http://www.opengis.net/ont/geosparql#wktLiteral