メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((133.7875000 34.0291667, 133.7937500 34.0291667, 133.7937500 34.0333333, 133.7875000 34.0333333, 133.7875000 34.0291667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral