メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.753214347292 43.20556372459, 141.75367497689 43.2057989307829, 141.752321554609 43.2072164953631, 141.752186692103 43.2071482527186, 141.751845869583 43.2069758736489, 141.751794882756 43.2069500519114, 141.75157561322 43.2068396674816, 141.751412031925 43.2067563196133, 141.752745247144 43.2053244712447, 141.752849419228 43.2053773188288, 141.752896812748 43.2054015059222, 141.753214347292 43.20556372459)) ^^http://www.opengis.net/ont/geosparql#wktLiteral