メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.994619478807 43.5499718007719, 144.99394866055 43.550502791419, 144.993881120064 43.550458952762, 144.993789075442 43.5503992834661, 144.993081867404 43.5499504087929, 144.993781426651 43.5494263276675, 144.994565683237 43.5499368085424, 144.994619478807 43.5499718007719)) ^^http://www.opengis.net/ont/geosparql#wktLiteral