メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.884363636116 43.0102707062794, 142.883560840132 43.0109514341796, 142.883509902868 43.010997921882, 142.883458348199 43.0110449765059, 142.882397260828 43.0103917040781, 142.88251312972 43.0102897201054, 142.882531652737 43.0102733716707, 142.882559999643 43.0102482486147, 142.883290937202 43.009601540957, 142.883961129567 43.0100189721179, 142.884363636116 43.0102707062794)) ^^http://www.opengis.net/ont/geosparql#wktLiteral