メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.446768870727 43.0458639420313, 141.446854495822 43.0461364420404, 141.447017264889 43.0466148479902, 141.447202776282 43.0472099512424, 141.446607822483 43.0473120475717, 141.446024065551 43.0474121796317, 141.445459761905 43.0475165956576, 141.445057866133 43.0462993714621, 141.444861207785 43.0456822431647, 141.444742024338 43.0453185689997, 141.446417072688 43.0449509019075, 141.446634835137 43.0454582485776, 141.446768870727 43.0458639420313)) ^^http://www.opengis.net/ont/geosparql#wktLiteral