メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((133.6750000 35.0875000, 133.6812500 35.0875000, 133.6812500 35.0916667, 133.6750000 35.0916667, 133.6750000 35.0875000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral