メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.839940457155 34.5474635235631, 135.839947471704 34.5477392068823, 135.83952881744 34.5477485189722, 135.83943787462 34.5477479767096, 135.838841663736 34.5477687442424, 135.838828767329 34.5475105204154, 135.838826093597 34.5474782588415, 135.838803101678 34.5472635489994, 135.839395657401 34.5472385504747, 135.839935646654 34.5472157340954, 135.839940457155 34.5474635235631)) ^^http://www.opengis.net/ont/geosparql#wktLiteral