メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((145.034408915235 43.1346466021624, 145.034000513267 43.1343183634126, 145.03330875244 43.1347240903699, 145.030893392031 43.1325939872179, 145.031454638108 43.1322619146084, 145.031520290248 43.1322232573614, 145.03273809215 43.1315058701151, 145.035734871807 43.1297403659304, 145.037936992116 43.1284419068751, 145.038609189553 43.1290440053559, 145.039640304187 43.1299459200361, 145.037543137056 43.1311117550232, 145.036931220176 43.1314519148475, 145.038042723303 43.1325122204044, 145.034408915235 43.1346466021624)) ^^http://www.opengis.net/ont/geosparql#wktLiteral