メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.435166195966 43.0508980742583, 141.435261511088 43.0511307027136, 141.43553615545 43.0520233201569, 141.434307726088 43.0522226086095, 141.433897159416 43.052289168672, 141.432736869296 43.052498075046, 141.432241511167 43.0525870936064, 141.43134230765 43.052654798584, 141.43128455906 43.0518479093297, 141.431258866186 43.0514505003243, 141.431226809856 43.0509545834079, 141.432112352936 43.0508088564333, 141.432802687545 43.0506887359666, 141.432888575812 43.0506738008964, 141.433340765365 43.0505951664404, 141.434960993813 43.0503023928166, 141.43511488179 43.0507393255931, 141.435166195966 43.0508980742583)) ^^http://www.opengis.net/ont/geosparql#wktLiteral