メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.776505847326 35.4130630159133, 136.775304829176 35.4131160870724, 136.774102507966 35.413162594513, 136.774076500641 35.41273323276, 136.775286773634 35.4126955187902, 136.776479700714 35.4126511533661, 136.776505847326 35.4130630159133)) ^^http://www.opengis.net/ont/geosparql#wktLiteral