メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.881119604508 43.0064962222746, 142.880658441344 43.0062117449077, 142.880371853789 43.0060325741499, 142.880194005215 43.00594887461, 142.880168053975 43.0059458520942, 142.880363317373 43.0057506687492, 142.880796769059 43.005374272039, 142.881621027813 43.005412282369, 142.881999316553 43.005558312439, 142.882135768728 43.0056137527209, 142.881119604508 43.0064962222746)) ^^http://www.opengis.net/ont/geosparql#wktLiteral