メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((134.67864882019 34.8329328229816, 134.678078684534 34.8331179819192, 134.678045056829 34.8330479314709, 134.677876687158 34.8326803523873, 134.677770724926 34.8324496240996, 134.677670761414 34.8322319565063, 134.678793147761 34.8318616208708, 134.67921176798 34.8327601483866, 134.67864882019 34.8329328229816)) ^^http://www.opengis.net/ont/geosparql#wktLiteral