メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.997241353015 43.5596749793145, 144.997839953416 43.5600628030931, 144.997906905181 43.5601061252543, 144.997395632727 43.5605368202027, 144.997332066143 43.5604955954116, 144.997258205935 43.5604492392957, 144.997124862445 43.5603664114439, 144.997087248273 43.5603430211578, 144.99670527348 43.5600960006347, 144.996636727538 43.5600516252147, 144.996290650617 43.5598071163019, 144.99685013317 43.5593394041821, 144.997217662967 43.5595878616276, 144.997290421492 43.559635545777, 144.997241353015 43.5596749793145)) ^^http://www.opengis.net/ont/geosparql#wktLiteral