メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.093709862846 37.8670411006284, 139.09505871762 37.8675343699264, 139.094866117307 37.8682232120686, 139.094679383335 37.8688911872142, 139.093561392021 37.868504592773, 139.092769691841 37.8682288358166, 139.092552556204 37.868153197683, 139.091506608217 37.8677787520928, 139.091486971632 37.8677718117949, 139.091850618085 37.867138291148, 139.09221938263 37.8664960161733, 139.093145469882 37.8668347341123, 139.093709862846 37.8670411006284)) ^^http://www.opengis.net/ont/geosparql#wktLiteral