メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.9590774751 43.5492331901157, 144.959512125864 43.5495301384671, 144.958685813465 43.5502182154649, 144.95844604259 43.5500758799834, 144.958218490334 43.549942957914, 144.958287939663 43.5498703603749, 144.95831201413 43.5498509798742, 144.957967842429 43.5496226568312, 144.958745872613 43.5490134670433, 144.9590774751 43.5492331901157)) ^^http://www.opengis.net/ont/geosparql#wktLiteral