メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.392145170204 43.030500121856, 141.393089710725 43.0308263521494, 141.392840410862 43.0312293100508, 141.392586088357 43.0316072618417, 141.392322607365 43.0320023055465, 141.391725004261 43.0317996368113, 141.390242185112 43.0313202552428, 141.390534697208 43.0308790164863, 141.390809965338 43.0304846279375, 141.391069791352 43.0300975083727, 141.39156161701 43.0302877819458, 141.392145170204 43.030500121856)) ^^http://www.opengis.net/ont/geosparql#wktLiteral