メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.98242736128 43.5585392605333, 144.981544577265 43.559279623354, 144.981401083703 43.5591898821198, 144.981031744307 43.5589384285416, 144.981267336044 43.5587255684579, 144.980913725538 43.5585267591878, 144.981490546254 43.5580936599516, 144.981660238035 43.5581811922691, 144.982005753513 43.5583464400227, 144.982391308946 43.558520363493, 144.98242736128 43.5585392605333)) ^^http://www.opengis.net/ont/geosparql#wktLiteral