メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.261620965626 44.0239684647475, 144.260326459169 44.023513732034, 144.2606656012 44.0230245381711, 144.261142063052 44.0231897958349, 144.26116571188 44.0232724274866, 144.262052885124 44.0233587109698, 144.261968528726 44.0234806649669, 144.261620965626 44.0239684647475)) ^^http://www.opengis.net/ont/geosparql#wktLiteral