メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.383704455832 43.0397179646013, 141.383999290627 43.0400930166746, 141.383567742058 43.0403512400059, 141.383381172845 43.0404523704844, 141.383089845682 43.0406322500034, 141.382865338477 43.0407650919217, 141.382200523598 43.0411508112761, 141.382131816413 43.0410867118171, 141.381493124687 43.0405368782011, 141.381920335382 43.0402741992275, 141.382345318472 43.0400128367729, 141.383424267128 43.0393584253058, 141.383631350497 43.0396324522975, 141.383704455832 43.0397179646013)) ^^http://www.opengis.net/ont/geosparql#wktLiteral