メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.370917232944 43.0646521324334, 141.370009885853 43.064533898297, 141.369466929071 43.064463542018, 141.369365037173 43.0644451759163, 141.369575391844 43.0637007369597, 141.369646655954 43.0634596327725, 141.369654532391 43.0634320530006, 141.369860712604 43.0627107205773, 141.370086280031 43.0619009902127, 141.370630841624 43.0621528061988, 141.371102953486 43.0623669300659, 141.37111267498 43.0623712942649, 141.371482839951 43.0625377230176, 141.371544311199 43.062565341802, 141.371209113498 43.063671657044, 141.370917232944 43.0646521324334)) ^^http://www.opengis.net/ont/geosparql#wktLiteral