メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.986344957739 43.5515635206274, 144.985628671547 43.5521514887181, 144.985575889417 43.5521174887034, 144.985056876146 43.5517798010408, 144.984665086188 43.5515357191044, 144.985346804243 43.5509658123705, 144.98538719288 43.550935381083, 144.986277488857 43.5515212221306, 144.986313166453 43.5515446983387, 144.986344957739 43.5515635206274)) ^^http://www.opengis.net/ont/geosparql#wktLiteral