メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.082010316932 39.7684378330655, 140.082810658047 39.7687591176008, 140.08313031158 39.7689323255268, 140.082663805135 39.7695976802645, 140.081626961963 39.7694265977764, 140.080378448862 39.7692701409197, 140.081042488996 39.7680436977318, 140.081798447367 39.7683491492838, 140.082010316932 39.7684378330655)) ^^http://www.opengis.net/ont/geosparql#wktLiteral