メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.308748631893 43.1276804075827, 141.306882828866 43.1286926726094, 141.305508641708 43.1273493280003, 141.306096668809 43.1270357888063, 141.306430731004 43.1267845791558, 141.30672035131 43.1265572674344, 141.307164873191 43.1261467559922, 141.307411215181 43.1264113170983, 141.308271486229 43.1273012155453, 141.308378649749 43.1273193951559, 141.308748631893 43.1276804075827)) ^^http://www.opengis.net/ont/geosparql#wktLiteral