メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.400529432134 43.7552790651043, 142.401376963106 43.7552289262955, 142.403311552313 43.7551029432187, 142.403313190156 43.7551266915519, 142.403373424382 43.7557573789632, 142.403414955236 43.7561299058887, 142.401291596986 43.756243815722, 142.401169590325 43.7561393889854, 142.401282128295 43.7560673375264, 142.400599180272 43.7561156275192, 142.3993959627 43.756314476936, 142.399345695091 43.7558375676054, 142.399276175903 43.7553427680345, 142.400529432134 43.7552790651043)) ^^http://www.opengis.net/ont/geosparql#wktLiteral