メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.350231656012 43.1372653443521, 141.350436608571 43.1376117712122, 141.350337601188 43.137637859002, 141.347716452617 43.1382997243422, 141.347595243776 43.1378233529166, 141.347563734633 43.1376997497682, 141.347530608404 43.137509744219, 141.349692814785 43.1368328158135, 141.350095797062 43.1367124838299, 141.350231656012 43.1372653443521)) ^^http://www.opengis.net/ont/geosparql#wktLiteral