メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.425481372691 43.0635380732783, 141.42550178239 43.0639266541134, 141.42554898306 43.0646356423648, 141.425218279343 43.0646481716116, 141.425033435353 43.064656054563, 141.424682036996 43.0646596425134, 141.424491911821 43.0646678376318, 141.424169280259 43.0646721228072, 141.423893091373 43.0646821586387, 141.423594519334 43.0646876005261, 141.423854285034 43.0635987925625, 141.424115110936 43.0625804620472, 141.424880442374 43.0625001728361, 141.425406886736 43.0624813167522, 141.425441035785 43.0628466473241, 141.425460774051 43.0631922518889, 141.425481372691 43.0635380732783)) ^^http://www.opengis.net/ont/geosparql#wktLiteral