メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((134.639845409195 34.7952994288367, 134.639227288383 34.7953056429543, 134.63577639825 34.7952927770955, 134.635768026312 34.7947995133228, 134.635769010075 34.79402506525, 134.635758963389 34.7928435612863, 134.639842815135 34.7928259470346, 134.639845409195 34.7952994288367)) ^^http://www.opengis.net/ont/geosparql#wktLiteral