メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.47428936479 43.0407800091206, 144.473847393601 43.0409450132081, 144.47386706859 43.0409694558273, 144.473852603256 43.0409724089224, 144.473343614267 43.0411454659626, 144.472793272888 43.0413523083967, 144.472262485443 43.0415643943694, 144.471354116145 43.0403212937135, 144.471903391992 43.0401169409964, 144.472458606917 43.0399125395948, 144.473058545228 43.0396776598738, 144.473426409006 43.0395315411284, 144.47428936479 43.0407800091206)) ^^http://www.opengis.net/ont/geosparql#wktLiteral