メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.742064687501 35.3338893147306, 136.741811402161 35.3338384258628, 136.740845048278 35.3340082264887, 136.740726389465 35.3335755258741, 136.740364161714 35.3334962230742, 136.740315001908 35.3331094040509, 136.741670068531 35.33345227041, 136.742064687501 35.3338893147306)) ^^http://www.opengis.net/ont/geosparql#wktLiteral