メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((134.545688582214 34.0637971713017, 134.545519099005 34.0637997408377, 134.544959044073 34.0638090139785, 134.544905212544 34.0624855971501, 134.545618121534 34.0624505124706, 134.545635381957 34.0627739382342, 134.545641797029 34.0628964388974, 134.545688582214 34.0637971713017)) ^^http://www.opengis.net/ont/geosparql#wktLiteral