メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((132.0312500 32.9375000, 132.0375000 32.9375000, 132.0375000 32.9416667, 132.0312500 32.9416667, 132.0312500 32.9375000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral