メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.080110618999 43.5386955733337, 142.079475292903 43.5386428478004, 142.078745066413 43.5386072374772, 142.078379959631 43.5385894481416, 142.078440486088 43.5380504364356, 142.078525312123 43.5375270029147, 142.078953886665 43.5374386286522, 142.0790459011 43.537671436257, 142.079217452665 43.5376379777349, 142.079309594851 43.5378269039805, 142.080065353934 43.5376729892753, 142.080137281443 43.5375133930007, 142.080206173231 43.5377169098648, 142.080241726916 43.5377192844066, 142.080110618999 43.5386955733337)) ^^http://www.opengis.net/ont/geosparql#wktLiteral