メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.162256296453 35.0919014365601, 137.162143854026 35.0914849303501, 137.162743693173 35.0914320591121, 137.163103770439 35.0926072759611, 137.161564776282 35.0929133713902, 137.161325134421 35.092655108096, 137.161714262536 35.0924117287131, 137.161505755616 35.0921621289505, 137.161449024077 35.0920645859861, 137.162256296453 35.0919014365601)) ^^http://www.opengis.net/ont/geosparql#wktLiteral