メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.351902518205 43.0740491701564, 141.351824527547 43.0743662438643, 141.351760644921 43.0746259522153, 141.351690713055 43.0748986625085, 141.351618525324 43.0751801564179, 141.351161022275 43.0751263461243, 141.350932695813 43.0750994913528, 141.350799815307 43.0750838627323, 141.350486272237 43.0750469835154, 141.350033215011 43.0749936934571, 141.350189586426 43.0744170272001, 141.350343733382 43.0738415394843, 141.351464515919 43.0739908306263, 141.351902518205 43.0740491701564)) ^^http://www.opengis.net/ont/geosparql#wktLiteral