メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.075423390695 35.2366788268705, 137.076593315507 35.236804494319, 137.076510444672 35.2372718384247, 137.07615150616 35.2381283533988, 137.075785577211 35.2380585710661, 137.07538072037 35.2380132655236, 137.074985013535 35.2379810642488, 137.07400828989 35.2379239819285, 137.07404544484 35.2374416743576, 137.07414824579 35.2365511667688, 137.074938499805 35.2366259245469, 137.075423390695 35.2366788268705)) ^^http://www.opengis.net/ont/geosparql#wktLiteral