メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.369710064112 43.0252895630607, 141.369165579189 43.025310693986, 141.368607291714 43.0253316458372, 141.367778873476 43.0253327897998, 141.367764800179 43.0251842133032, 141.367732707006 43.0250221357849, 141.367703541201 43.0247962192595, 141.367654661679 43.0245344943869, 141.368949700634 43.0245130306472, 141.369414807071 43.0244988863718, 141.369507777224 43.0244996014697, 141.369886907696 43.0244848632958, 141.370100571694 43.0244713845451, 141.370355703444 43.0246957312998, 141.3705114722 43.0248838666317, 141.370748559601 43.0251637045743, 141.370782069152 43.0252270483738, 141.37054106365 43.0252418658641, 141.370292659938 43.0252511399846, 141.369710064112 43.0252895630607)) ^^http://www.opengis.net/ont/geosparql#wktLiteral