メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.319765463561 43.2296029576089, 144.315483419822 43.2305946493741, 144.315347908026 43.2306259993627, 144.314440083986 43.2284465020191, 144.314366224621 43.2282756101073, 144.320876493615 43.2266278800248, 144.320995888345 43.2268990007379, 144.321952957386 43.229072281321, 144.319908031663 43.2295699274047, 144.319765463561 43.2296029576089)) ^^http://www.opengis.net/ont/geosparql#wktLiteral