メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.84476669226 34.7434946512763, 137.84418067047 34.7434505048097, 137.844453489213 34.7426231722849, 137.845027116143 34.7427452860724, 137.84476669226 34.7434946512763)) ^^http://www.opengis.net/ont/geosparql#wktLiteral