メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((124.3062500 24.5333333, 124.3125000 24.5333333, 124.3125000 24.5375000, 124.3062500 24.5375000, 124.3062500 24.5333333)) ^^http://www.opengis.net/ont/geosparql#wktLiteral