メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.308039973584 43.0940627279166, 141.307586805692 43.0943268086914, 141.307168912487 43.0945683210773, 141.307036936845 43.0944383921757, 141.306946805106 43.0944146521121, 141.306333718577 43.0947807934372, 141.305571482589 43.0940985088179, 141.306158352182 43.0937334209977, 141.306629005791 43.0934618231158, 141.307080330175 43.0931989257451, 141.308039973584 43.0940627279166)) ^^http://www.opengis.net/ont/geosparql#wktLiteral