メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((132.1312500 33.8458334, 132.1375000 33.8458334, 132.1375000 33.8500000, 132.1312500 33.8500000, 132.1312500 33.8458334)) ^^http://www.opengis.net/ont/geosparql#wktLiteral