メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((124.2125000 24.4083333, 124.2187500 24.4083333, 124.2187500 24.4125000, 124.2125000 24.4125000, 124.2125000 24.4083333)) ^^http://www.opengis.net/ont/geosparql#wktLiteral