メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.011376807368 37.7582156035498, 139.010979665815 37.7583603643661, 139.010560905339 37.7585205618361, 139.010238722536 37.7581243827998, 139.009922543634 37.7577176189302, 139.010286472619 37.7575975024424, 139.01059442238 37.7575242264847, 139.01084625479 37.7574707615179, 139.010927720953 37.7575714918143, 139.011062487077 37.757764204864, 139.011376807368 37.7582156035498)) ^^http://www.opengis.net/ont/geosparql#wktLiteral