メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.934462370766 34.8995000305036, 136.934251432517 34.8987857491513, 136.93474481146 34.898661886941, 136.935052317363 34.8986353575699, 136.935004934381 34.8988828990995, 136.934795011799 34.8994425591349, 136.934462370766 34.8995000305036)) ^^http://www.opengis.net/ont/geosparql#wktLiteral