メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.403448081493 43.7566204439466, 142.403510462251 43.7571165327909, 142.4035783163 43.7575954913394, 142.401481046751 43.7577024780991, 142.400267873636 43.7577590196872, 142.40022588636 43.7572982032504, 142.399507359207 43.7573241714517, 142.399485708045 43.7570749082455, 142.399399773438 43.7564372895017, 142.399399552257 43.7563486317701, 142.3993959627 43.756314476936, 142.400599180272 43.7561156275192, 142.401282128295 43.7560673375264, 142.401169590325 43.7561393889854, 142.401291596986 43.756243815722, 142.403414955236 43.7561299058887, 142.403448081493 43.7566204439466)) ^^http://www.opengis.net/ont/geosparql#wktLiteral