メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.451905618329 43.0447429850788, 141.452634297498 43.0453929979903, 141.453046126422 43.0457647511592, 141.453481219236 43.0461286482932, 141.452143969094 43.0463512193277, 141.451697054878 43.0464298988551, 141.451599229351 43.0464496827339, 141.45101691682 43.0465468270855, 141.450522229709 43.0450460977855, 141.450228515079 43.0441938157976, 141.451061793523 43.0440226799374, 141.451429660412 43.0443373734934, 141.451905618329 43.0447429850788)) ^^http://www.opengis.net/ont/geosparql#wktLiteral