メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.825356177722 35.3932839372502, 136.824505177004 35.3931086679965, 136.824650301328 35.3926393706726, 136.825063141867 35.3927257381655, 136.825202346631 35.3923233933554, 136.825640770147 35.392414829572, 136.825356177722 35.3932839372502)) ^^http://www.opengis.net/ont/geosparql#wktLiteral