メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.469786804394 35.0403018037143, 138.468852399918 35.0399068416147, 138.468376588493 35.0395805824787, 138.467537517116 35.0390204863259, 138.467140502361 35.0387705134523, 138.467499143618 35.0388414547186, 138.468106061147 35.039011757714, 138.468745756329 35.0391636854251, 138.470211344154 35.0395582814308, 138.470062957662 35.0398220610602, 138.469786804394 35.0403018037143)) ^^http://www.opengis.net/ont/geosparql#wktLiteral