メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.454228860782 43.0358119004687, 144.454413978772 43.0362264959388, 144.453430513327 43.0364769680205, 144.452297714962 43.036744655141, 144.451459287985 43.0369067999394, 144.451214009471 43.0365465949443, 144.450959484888 43.0361636414429, 144.451927758493 43.0359278294185, 144.453071582511 43.0356525489232, 144.454051104604 43.0354154468192, 144.454228860782 43.0358119004687)) ^^http://www.opengis.net/ont/geosparql#wktLiteral