メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.273185665248 43.1083447928056, 141.273986731671 43.1090308569162, 141.273504859598 43.1093343636997, 141.273095993245 43.1095978426381, 141.272713676351 43.1098454411369, 141.272423278071 43.1100107650804, 141.272411473458 43.110101247206, 141.271603933061 43.1094120229386, 141.271280635702 43.1091410274056, 141.270793688366 43.1087060368576, 141.271128997133 43.1084694330937, 141.271535553384 43.1082126923507, 141.271956788292 43.1079318128817, 141.272047858292 43.1078666230019, 141.27240196086 43.1076302487424, 141.273185665248 43.1083447928056)) ^^http://www.opengis.net/ont/geosparql#wktLiteral