メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.977514555314 43.5579876179066, 144.977885473366 43.5582402752435, 144.977965336744 43.5582915283537, 144.977251269375 43.5588506963556, 144.977130231004 43.5589454212233, 144.976678876601 43.5586502752803, 144.976201026576 43.5583378295454, 144.976317409602 43.5582471185777, 144.976361185004 43.5582015274436, 144.977030085224 43.5576699179475, 144.977031764841 43.5576685772465, 144.977514555314 43.5579876179066)) ^^http://www.opengis.net/ont/geosparql#wktLiteral