メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.315562286813 43.0655180730207, 141.316160261213 43.066161892268, 141.3158187625 43.0663461096155, 141.315643612509 43.0664468667414, 141.315188519261 43.0666954197125, 141.315136332738 43.0666136927142, 141.314986430915 43.0663786951322, 141.314698334018 43.0659401610442, 141.314126572321 43.0650499045442, 141.314787830029 43.0646978290172, 141.315562286813 43.0655180730207)) ^^http://www.opengis.net/ont/geosparql#wktLiteral