メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.087530792658 35.1395501865186, 136.086692439438 35.1391315619582, 136.087480889242 35.1381390916222, 136.088336721607 35.1385866420566, 136.087530792658 35.1395501865186)) ^^http://www.opengis.net/ont/geosparql#wktLiteral