メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((130.2062500 32.0375000, 130.2125000 32.0375000, 130.2125000 32.0416667, 130.2062500 32.0416667, 130.2062500 32.0375000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral