メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.325085519109 43.760253549433, 142.324803812464 43.760769398919, 142.323757457177 43.7604634255051, 142.323559674449 43.760236784043, 142.323868428854 43.7599378605145, 142.324089723733 43.7597509973785, 142.324434514609 43.7593537920219, 142.324801271966 43.7594679130779, 142.325441826243 43.7596570967034, 142.325416248736 43.7596909388385, 142.325085519109 43.760253549433)) ^^http://www.opengis.net/ont/geosparql#wktLiteral