メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.343593543957 43.0941179124253, 141.343510621839 43.0944307091222, 141.343434392672 43.0947385653702, 141.342599118711 43.0946396665271, 141.341874521956 43.0945325687318, 141.342004978155 43.0940364531909, 141.342029662145 43.0938856530716, 141.342148187565 43.0934759453285, 141.342938680038 43.0935843386428, 141.34329624593 43.0936298651353, 141.343434849509 43.0936473509625, 141.343698332991 43.0936953644201, 141.343655078601 43.0938952472343, 141.343593543957 43.0941179124253)) ^^http://www.opengis.net/ont/geosparql#wktLiteral