メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.135009927605 42.9754842191764, 144.13487566855 42.9754221509504, 144.134651674286 42.9753007967826, 144.133002536604 42.9745583422988, 144.132574546405 42.9743679013726, 144.132088110041 42.9741074585359, 144.133035993323 42.9731123941179, 144.133758174512 42.9723295624608, 144.134060503571 42.9724385864686, 144.134869308246 42.9728558176543, 144.135998431583 42.9731302696131, 144.136662569191 42.9734011259485, 144.136809985004 42.9734612881211, 144.135009927605 42.9754842191764)) ^^http://www.opengis.net/ont/geosparql#wktLiteral