メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.341806023568 43.7665708601003, 142.342522197829 43.7664151450436, 142.342994419035 43.7675935306959, 142.343117448233 43.7677337191513, 142.343531281063 43.7682052484783, 142.342302725803 43.7685301261938, 142.342038960821 43.7680519303703, 142.341878600896 43.7677455677401, 142.341293597238 43.7666822785808, 142.341394359319 43.7666603808134, 142.341806023568 43.7665708601003)) ^^http://www.opengis.net/ont/geosparql#wktLiteral