メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.984626121338 36.1747873391044, 137.98470552633 36.1749629719832, 137.984768333686 36.1750869748947, 137.98491254453 36.1753798234763, 137.985069668764 36.1757104333222, 137.984705706126 36.17571355379, 137.984273839208 36.1757083359646, 137.983763010445 36.1757128788787, 137.983717350063 36.1757093024446, 137.983345636449 36.1757161334142, 137.983192006463 36.1757087278346, 137.982855608196 36.1757140205228, 137.982810105404 36.1753552301361, 137.982786439208 36.1750835993884, 137.982706524868 36.1743374110355, 137.983088537309 36.1742620803667, 137.983453937884 36.1741838414661, 137.983523987881 36.1741692342741, 137.98395759042 36.1740932956578, 137.984287877733 36.1739987971555, 137.984367670588 36.1741812440935, 137.984626121338 36.1747873391044)) ^^http://www.opengis.net/ont/geosparql#wktLiteral