メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.776522491201 35.4135011147522, 136.775330875213 35.4135476318135, 136.774124525978 35.4135897593207, 136.774102507966 35.413162594513, 136.775304829176 35.4131160870724, 136.776505847326 35.4130630159133, 136.776522491201 35.4135011147522)) ^^http://www.opengis.net/ont/geosparql#wktLiteral