メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.401754807435 43.0040943605701, 144.401353318447 43.0042038830238, 144.400604328211 43.0044325293234, 144.400512015903 43.0043079536258, 144.400269063846 43.0039800032525, 144.400108055266 43.0037704938187, 144.399941438151 43.0035321144522, 144.401355615936 43.0027885445829, 144.401774680027 43.0031987021816, 144.402204543586 43.0036161105147, 144.402491182978 43.0038833145792, 144.401754807435 43.0040943605701)) ^^http://www.opengis.net/ont/geosparql#wktLiteral