メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.933368984044 35.1427127663413, 136.933368903455 35.1427110056696, 136.934458542513 35.1427641931561, 136.934412078046 35.1433751100334, 136.933396299922 35.1433277015767, 136.933396398158 35.1433305890836, 136.931991110145 35.1432540939583, 136.932048719218 35.1426351007697, 136.933368984044 35.1427127663413)) ^^http://www.opengis.net/ont/geosparql#wktLiteral