メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.8946233758 35.4858664519913, 136.894243396362 35.485849645015, 136.894204701886 35.4856618827326, 136.894177323586 35.4854886531392, 136.894116500727 35.4850386584441, 136.894635974327 35.4849424346619, 136.894627781055 35.4850428389676, 136.894623807943 35.4854943064485, 136.8946233758 35.4858664519913)) ^^http://www.opengis.net/ont/geosparql#wktLiteral