メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.2062500 44.0708334, 144.2125000 44.0708334, 144.2125000 44.0750000, 144.2062500 44.0750000, 144.2062500 44.0708334)) ^^http://www.opengis.net/ont/geosparql#wktLiteral