メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.265430499578 44.2458282538771, 143.261912814054 44.2471802330106, 143.26061317152 44.245404651054, 143.262677951319 44.2445965056555, 143.262747410896 44.2446826076608, 143.264031167651 44.2441588273913, 143.265612414072 44.245758325095, 143.265430499578 44.2458282538771)) ^^http://www.opengis.net/ont/geosparql#wktLiteral