メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.5072056266 40.6082842919552, 140.507081214621 40.6082348277031, 140.507168901987 40.6078913702993, 140.507267065772 40.6075431567607, 140.507335375978 40.6072971634392, 140.507390657835 40.6071438646207, 140.507475170793 40.6070161914779, 140.507597441084 40.6068886936616, 140.50780994745 40.6067565969007, 140.507986433197 40.6066899743531, 140.508351787545 40.6066110787918, 140.508546227014 40.6065779959437, 140.508865608714 40.6070759859069, 140.507562660192 40.6080244094531, 140.507650825522 40.6083141178809, 140.507332936714 40.6083168761739, 140.5072056266 40.6082842919552)) ^^http://www.opengis.net/ont/geosparql#wktLiteral