メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.450876463625 43.0336286098535, 144.449232236107 43.034059071437, 144.449007109537 43.0339079081708, 144.448420182023 43.0334560898708, 144.448003153176 43.0331282244507, 144.447880711676 43.0328833774226, 144.451691806757 43.032034983364, 144.452981871039 43.0331151162939, 144.450876463625 43.0336286098535)) ^^http://www.opengis.net/ont/geosparql#wktLiteral