メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((132.7375000 33.1416667, 132.7437500 33.1416667, 132.7437500 33.1458334, 132.7375000 33.1458334, 132.7375000 33.1416667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral