メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.393558470594 43.0917760094988, 141.393863894029 43.0921014477266, 141.394195294021 43.0924430440312, 141.394556676397 43.0928232615538, 141.394898779529 43.093182516796, 141.394162711571 43.0934736503502, 141.393509759251 43.0937427568751, 141.393076095759 43.0939076609511, 141.392462582351 43.0941418230646, 141.391973460782 43.0943398520234, 141.391565093555 43.0944999455902, 141.391168215253 43.0946618117714, 141.391018398238 43.0942167875012, 141.390592852869 43.0929845566799, 141.390445227076 43.0925138030108, 141.391186002053 43.0922022634583, 141.391815623061 43.0919472714899, 141.393209549708 43.0913908178052, 141.393558470594 43.0917760094988)) ^^http://www.opengis.net/ont/geosparql#wktLiteral