メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.238976013799 38.0337180041652, 138.239014872791 38.0337525809915, 138.238847015 38.0338846832708, 138.238645968053 38.0337295154023, 138.238723103685 38.0336616905465, 138.238974237642 38.0334607913699, 138.239306259201 38.033168144071, 138.239494328373 38.0333503084337, 138.239547141491 38.0334190135895, 138.23954416949 38.0334202755986, 138.239374151711 38.0335000869788, 138.239320562812 38.0334307745522, 138.239225647526 38.0334747251991, 138.239281478016 38.0335664974082, 138.239104570385 38.0336676089466, 138.23909088011 38.0336512469353, 138.238976013799 38.0337180041652)) ^^http://www.opengis.net/ont/geosparql#wktLiteral