メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.412608726168 43.79544643851, 142.413151486466 43.795764597696, 142.413688064324 43.7961046157399, 142.412509787561 43.7970913787983, 142.411429610314 43.796438150696, 142.410438928812 43.7957984983127, 142.40989619183 43.7954660316833, 142.411099125091 43.7944604668595, 142.412282617653 43.7952130429692, 142.412629843776 43.7954291445683, 142.412608726168 43.79544643851)) ^^http://www.opengis.net/ont/geosparql#wktLiteral