メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.706974484183 44.3658012180428, 141.706570064971 44.366277852849, 141.706222095242 44.3666542056415, 141.70618677584 44.3666947148628, 141.705390627794 44.3660685156141, 141.704919310318 44.3656977746977, 141.704192055324 44.3651234047045, 141.704238202205 44.365093741176, 141.704766622652 44.3647598507277, 141.705241058347 44.3644547038764, 141.705280696922 44.3644291921104, 141.705991159945 44.3650072030466, 141.706416701779 44.3653463963869, 141.706974484183 44.3658012180428)) ^^http://www.opengis.net/ont/geosparql#wktLiteral