メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.158247057452 34.6521548948461, 135.158152279153 34.6524981011647, 135.158044132752 34.652868442501, 135.156949885126 34.6525310316474, 135.157213750853 34.6519117300482, 135.158247057452 34.6521548948461)) ^^http://www.opengis.net/ont/geosparql#wktLiteral