メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.770200735124 35.2614166836862, 136.770196994013 35.2618788498502, 136.770209388535 35.2620466353473, 136.77018193092 35.26254731206, 136.770182108673 35.2631024461621, 136.769534439249 35.2631703409485, 136.769154659084 35.2632100912293, 136.769160003338 35.2627201856639, 136.769175999966 35.2618731360258, 136.769181187316 35.2614146362197, 136.770200735124 35.2614166836862)) ^^http://www.opengis.net/ont/geosparql#wktLiteral