メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.093682110807 34.7597366004674, 138.093734630805 34.7604990028713, 138.093334389575 34.7604025391312, 138.09312751651 34.7603395617585, 138.092870059482 34.7602299232996, 138.092522293565 34.7600746121812, 138.092328397572 34.7599163095802, 138.092073001016 34.7596415764405, 138.093164167462 34.759587603232, 138.093188120726 34.7597393997476, 138.093682110807 34.7597366004674)) ^^http://www.opengis.net/ont/geosparql#wktLiteral