メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.511687511629 40.5032555021521, 141.511941267743 40.5035439617355, 141.510756510833 40.5042371109873, 141.509740432947 40.5048174555379, 141.509342901103 40.505150864648, 141.509282458991 40.5052821936202, 141.50778419714 40.5042795125277, 141.507243901836 40.5039048758103, 141.508332807277 40.5023903118825, 141.509506978136 40.5007759585917, 141.509845441299 40.5011449104841, 141.51016403334 40.5015309688937, 141.510902027369 40.5024183373607, 141.51101853614 40.5025425412709, 141.511687511629 40.5032555021521)) ^^http://www.opengis.net/ont/geosparql#wktLiteral