メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.548645342391 43.241836424105, 143.548363531083 43.2418479992634, 143.548363277767 43.241845118763, 143.548278322396 43.2407898823502, 143.549734504724 43.2407240792191, 143.54975955272 43.2410920379518, 143.549772455755 43.2412824823757, 143.549803812036 43.2417434143742, 143.549807854679 43.241788730982, 143.548645342391 43.241836424105)) ^^http://www.opengis.net/ont/geosparql#wktLiteral