メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.1020119469 43.8289651695698, 144.101545047213 43.8291072287567, 144.101514890058 43.8290429539252, 144.101543937361 43.8290336583594, 144.101088843773 43.8282636579582, 144.100761468275 43.8277096636911, 144.102759431408 43.8270491610134, 144.103531622311 43.8283978339652, 144.103535278248 43.8283966494962, 144.103588540622 43.8284855818932, 144.1020119469 43.8289651695698)) ^^http://www.opengis.net/ont/geosparql#wktLiteral