メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.962503330063 38.8765408257016, 139.962610496766 38.87690823315, 139.962756936705 38.8771709257599, 139.962382457157 38.8770908584499, 139.962190576291 38.8770180627367, 139.961936343082 38.8768530974994, 139.962281300029 38.8768583430614, 139.962503330063 38.8765408257016)) ^^http://www.opengis.net/ont/geosparql#wktLiteral