メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.987979857865 43.5527491511754, 144.98778676755 43.552900358003, 144.987344296628 43.5526221649237, 144.987539133999 43.5524583293412, 144.987979857865 43.5527491511754)) ^^http://www.opengis.net/ont/geosparql#wktLiteral