メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.366353718687 43.0854724923332, 141.367024602877 43.0855669874287, 141.367356749678 43.0856098479498, 141.367224133808 43.0861108292342, 141.367114163135 43.086558183355, 141.366936693974 43.0872883684799, 141.366360791787 43.0872070544444, 141.36606312093 43.0871683255814, 141.365385369306 43.0870699749979, 141.365577948944 43.0863510916952, 141.365667857796 43.0859581589714, 141.365679620539 43.0859076837421, 141.365824198906 43.0853963163118, 141.366353718687 43.0854724923332)) ^^http://www.opengis.net/ont/geosparql#wktLiteral