メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.380733144158 43.8277109367005, 142.38003174895 43.827239872592, 142.382525335966 43.8254254155757, 142.383200727934 43.8258877710029, 142.380733144158 43.8277109367005)) ^^http://www.opengis.net/ont/geosparql#wktLiteral