メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.090975316667 39.4413260736137, 140.089910180868 39.4410132365708, 140.087158391891 39.4401574870113, 140.087971223573 39.4401313766739, 140.088851206989 39.4401231068047, 140.089516071152 39.4400786588947, 140.089965564255 39.4400259005428, 140.090388251808 39.4399590358174, 140.091179513646 39.4398527900451, 140.091529853768 39.439834157205, 140.090975316667 39.4413260736137)) ^^http://www.opengis.net/ont/geosparql#wktLiteral