メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.599313838463 43.2933395498481, 144.599173396184 43.293237724813, 144.598999718688 43.2930978342573, 144.598552148138 43.2927507026191, 144.59846893655 43.2926699225358, 144.598392447131 43.2925787372566, 144.598357607839 43.2925240385551, 144.599722355236 43.2906346639871, 144.600709558902 43.2912649986612, 144.599313838463 43.2933395498481)) ^^http://www.opengis.net/ont/geosparql#wktLiteral