メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.456497112623 43.0462198600748, 144.456705717214 43.0466569947524, 144.456805714796 43.046878493209, 144.456221384033 43.0470227570733, 144.455656590612 43.0471611562341, 144.455078426482 43.0472903161962, 144.454984038876 43.0470914233363, 144.454765606226 43.0466312674904, 144.454550855613 43.0462041633929, 144.454908149791 43.0458197594537, 144.454910418921 43.0457653526892, 144.455066027047 43.0458800797622, 144.45563618987 43.0457420020293, 144.456222163453 43.0455903242428, 144.456497112623 43.0462198600748)) ^^http://www.opengis.net/ont/geosparql#wktLiteral