メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.943635896475 43.5596110437607, 141.941767407878 43.5600940616855, 141.941613802871 43.5601209317836, 141.940346927822 43.5604275248686, 141.938751889087 43.560872136195, 141.938482080466 43.5609433067866, 141.93698090849 43.5613229245004, 141.936465678181 43.5602211596593, 141.935785100009 43.558765832836, 141.93756107302 43.558321619648, 141.93865972873 43.55756317882, 141.939833894448 43.5567007828093, 141.942576701247 43.5587772967269, 141.943635896475 43.5596110437607)) ^^http://www.opengis.net/ont/geosparql#wktLiteral