メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.230138913835 36.0382974584241, 136.228987276119 36.0388416139021, 136.228983229749 36.0374355397921, 136.228467718199 36.0374599660395, 136.228354746429 36.0361829955078, 136.228294699692 36.0353796385942, 136.229137858321 36.0367054297727, 136.229550195149 36.0373508133795, 136.22957508256 36.0373900692751, 136.229859364871 36.0378383608752, 136.230138913835 36.0382974584241)) ^^http://www.opengis.net/ont/geosparql#wktLiteral