メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.379911999077 43.0867110788641, 141.380565250608 43.0865829805013, 141.38101093535 43.0878038077468, 141.380342258332 43.0879294012005, 141.380026728489 43.0879921287348, 141.379030091525 43.0881903329232, 141.378874634037 43.0877719660194, 141.378731710949 43.087362976958, 141.378592885924 43.0869696317999, 141.379138283702 43.0868554180903, 141.379911999077 43.0867110788641)) ^^http://www.opengis.net/ont/geosparql#wktLiteral