メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.923459207749 35.1905736943119, 136.923919768749 35.1905525135731, 136.923928122798 35.1909611303699, 136.923930515322 35.191051207632, 136.923485860186 35.1910519273395, 136.923481115199 35.1909743805902, 136.923039565908 35.1909769357878, 136.923030079401 35.1909866357111, 136.922605733923 35.1910019000926, 136.922583342862 35.1906141007622, 136.923010529287 35.1905942636917, 136.923459207749 35.1905736943119)) ^^http://www.opengis.net/ont/geosparql#wktLiteral