メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.999833299678 34.9996265172215, 136.999315697219 34.9996890430583, 136.998932796058 34.9997328786112, 136.998279527157 34.999818240514, 136.997706018045 34.9989896490582, 136.998098601074 34.9989125896037, 136.999146410991 34.9987343925311, 137.000584842541 34.9984871431067, 137.000704941163 34.9995232084733, 137.000426905938 34.9995537425602, 136.999833299678 34.9996265172215)) ^^http://www.opengis.net/ont/geosparql#wktLiteral