メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.389255859026 43.0395794262073, 141.388712792621 43.0399017478047, 141.388263551938 43.040165131664, 141.387766900237 43.0404587501721, 141.387171593557 43.0399094165994, 141.387105511282 43.0398492784514, 141.386831903493 43.0396003563271, 141.387320429821 43.0393115328441, 141.387739176052 43.0390484856763, 141.388266256748 43.0387034030489, 141.389255859026 43.0395794262073)) ^^http://www.opengis.net/ont/geosparql#wktLiteral