メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.238409708283 34.8217725968987, 137.238081796354 34.8218516819821, 137.23793108239 34.8214122730359, 137.237780369277 34.8209728639822, 137.235170721701 34.8215829601634, 137.234965294221 34.8210759653625, 137.236440909919 34.8207370167405, 137.236973787715 34.8206352742852, 137.237629637118 34.8205109163364, 137.239173610725 34.8202169686136, 137.239173681151 34.820295853414, 137.239078121236 34.8204086052279, 137.238859649299 34.820611586928, 137.238545636209 34.8209498579496, 137.238354604555 34.8212767834785, 137.238327472827 34.8215021851532, 137.238409708283 34.8217725968987)) ^^http://www.opengis.net/ont/geosparql#wktLiteral