メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.912269641975 43.5218202900587, 141.910607371408 43.5220767512492, 141.910152129605 43.520413175752, 141.911845374359 43.5201402907129, 141.912269641975 43.5218202900587)) ^^http://www.opengis.net/ont/geosparql#wktLiteral