メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((133.5312500 34.1291667, 133.5375000 34.1291667, 133.5375000 34.1333333, 133.5312500 34.1333333, 133.5312500 34.1291667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral