メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((124.1937500 24.3666667, 124.2000000 24.3666667, 124.2000000 24.3708334, 124.1937500 24.3708334, 124.1937500 24.3666667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral