メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.752960445302 43.1954457803514, 141.753378521499 43.1956555534029, 141.752609437488 43.1964831444746, 141.752169355336 43.1962601210451, 141.751827642007 43.1960869627862, 141.751732017781 43.1960371078899, 141.752521885955 43.1952257175774, 141.752960445302 43.1954457803514)) ^^http://www.opengis.net/ont/geosparql#wktLiteral