メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((134.625043823325 34.7928203541357, 134.625091131804 34.7953059741804, 134.622906767618 34.7952954271214, 134.622877228394 34.7952952172012, 134.62288949254 34.7928276256569, 134.625043823325 34.7928203541357)) ^^http://www.opengis.net/ont/geosparql#wktLiteral