メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.338137901777 43.0878305255418, 141.338888854076 43.0879276602801, 141.33871262412 43.088656126908, 141.338656458498 43.0888912104036, 141.338555966531 43.0893004961203, 141.338472338313 43.0895496369086, 141.33758240703 43.0894313129054, 141.337394161809 43.0894062831038, 141.336958045934 43.0893470997854, 141.337014122239 43.0891443680602, 141.337184003226 43.0884506661114, 141.337360129144 43.0877303585524, 141.337959671493 43.0878073013308, 141.338137901777 43.0878305255418)) ^^http://www.opengis.net/ont/geosparql#wktLiteral