メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.957089723168 43.5464583575102, 144.956973387464 43.5463863663113, 144.956586467589 43.546135495047, 144.956289375808 43.5459475404523, 144.956273057171 43.5459371683968, 144.956254347198 43.5459252355474, 144.956913949238 43.545396388851, 144.95775038522 43.5459186889806, 144.957089723168 43.5464583575102)) ^^http://www.opengis.net/ont/geosparql#wktLiteral