メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.553589352189 43.2405497283896, 143.553459322838 43.2405556442059, 143.55245474532 43.2406010812745, 143.55244371903 43.2404675109192, 143.55233444406 43.2394840082798, 143.552728767327 43.2394667784209, 143.553358971078 43.2394411573604, 143.554393040478 43.2393991739233, 143.554444514792 43.2398997521783, 143.55450714733 43.2405082276834, 143.553589352189 43.2405497283896)) ^^http://www.opengis.net/ont/geosparql#wktLiteral