メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((125.3750000 24.7625000, 125.3812500 24.7625000, 125.3812500 24.7666667, 125.3750000 24.7666667, 125.3750000 24.7625000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral