メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((125.3250000 24.7333333, 125.3312500 24.7333333, 125.3312500 24.7375000, 125.3250000 24.7375000, 125.3250000 24.7333333)) ^^http://www.opengis.net/ont/geosparql#wktLiteral