メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.329672270968 43.0535009148676, 141.329655870884 43.0536484038628, 141.329612632251 43.0540383839978, 141.329216307538 43.0540162050078, 141.329197340638 43.0540147163975, 141.328419516437 43.053953876372, 141.327928639436 43.0539056827453, 141.327871488649 43.0538987521648, 141.327917367326 43.0535381214098, 141.327938325929 43.0533555043994, 141.328000856057 43.0528116600666, 141.328006479901 43.052762826414, 141.329743753103 43.052864094988, 141.329723645157 43.0530432390774, 141.329678592209 43.0534446023291, 141.329672270968 43.0535009148676)) ^^http://www.opengis.net/ont/geosparql#wktLiteral