メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((133.9125000 35.0375000, 133.9187500 35.0375000, 133.9187500 35.0416667, 133.9125000 35.0416667, 133.9125000 35.0375000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral