メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.376302629867 43.0420127971303, 141.376044056412 43.0421529607115, 141.375742768091 43.0423503284164, 141.375195857302 43.042693723603, 141.375263960932 43.0421448230504, 141.375278686951 43.0420260775377, 141.375359832452 43.0415985966446, 141.375366364488 43.0415639040361, 141.375407827243 43.0412300110291, 141.376302629867 43.0420127971303)) ^^http://www.opengis.net/ont/geosparql#wktLiteral