メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.084362021407 43.5373715912073, 142.084363664838 43.5373586539513, 142.084350892516 43.5367974465631, 142.087589876167 43.5367987573051, 142.087646088116 43.5368023199446, 142.087507608216 43.5371057804901, 142.086959577962 43.5371720008159, 142.086128741421 43.5372366434692, 142.08554043066 43.5372616228954, 142.084955287131 43.5373078061534, 142.084362021407 43.5373715912073)) ^^http://www.opengis.net/ont/geosparql#wktLiteral