メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.62437253467 34.9411160782931, 136.626235654874 34.9412351223183, 136.625899840831 34.9438182488607, 136.624719009156 34.9437230975817, 136.624288840239 34.9437559357353, 136.623631263405 34.9437845830705, 136.623607173584 34.9430354943515, 136.623593219392 34.9428128026861, 136.623647478068 34.9418608333366, 136.623730770318 34.941066895478, 136.62437253467 34.9411160782931)) ^^http://www.opengis.net/ont/geosparql#wktLiteral