メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.617330200889 34.9299344470993, 136.618753884285 34.9299433718791, 136.618749704049 34.9302587017833, 136.618740310308 34.9310943153992, 136.618731164625 34.9312888864489, 136.618728698559 34.9321246054693, 136.617300498949 34.9321047890933, 136.615189899188 34.9320740276906, 136.615237335158 34.9299252161808, 136.615882975942 34.9299280898951, 136.616513135453 34.9299308264665, 136.617330200889 34.9299344470993)) ^^http://www.opengis.net/ont/geosparql#wktLiteral