メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.678776067003 42.8250968305605, 141.680331368304 42.825435725497, 141.681837413857 42.8257659860132, 141.681655334529 42.8261896146627, 141.681418692318 42.8268427523111, 141.681261865476 42.8272211410317, 141.681105002933 42.8276082499904, 141.679611966816 42.8272822642032, 141.676997453115 42.8267435780008, 141.677147217468 42.8263517266896, 141.677302698452 42.8259612406461, 141.677564817362 42.8253268084613, 141.677745498068 42.8248763826558, 141.678776067003 42.8250968305605)) ^^http://www.opengis.net/ont/geosparql#wktLiteral