メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.958745872613 43.5490134670433, 144.957967842429 43.5496226568312, 144.957768151434 43.5494900581339, 144.957116343073 43.549045903604, 144.957004690693 43.5489620572978, 144.957386954727 43.5486642014723, 144.957430027134 43.5486890579269, 144.957807507591 43.5483837894096, 144.958154350099 43.5486201359565, 144.958483918158 43.5488333692756, 144.958745872613 43.5490134670433)) ^^http://www.opengis.net/ont/geosparql#wktLiteral