メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((132.5250000 33.1458334, 132.5312500 33.1458334, 132.5312500 33.1500000, 132.5250000 33.1500000, 132.5250000 33.1458334)) ^^http://www.opengis.net/ont/geosparql#wktLiteral