メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.905124043804 43.4986287914448, 141.904342495791 43.4987507709562, 141.903993909257 43.4975787872059, 141.904768014574 43.4974505983001, 141.905124043804 43.4986287914448)) ^^http://www.opengis.net/ont/geosparql#wktLiteral