メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.18896054722 39.1902976536701, 140.188660147228 39.1897356950963, 140.188416575509 39.189281876244, 140.189053285087 39.188771458615, 140.189540649479 39.1883897110481, 140.190466171692 39.1897553106937, 140.18896054722 39.1902976536701)) ^^http://www.opengis.net/ont/geosparql#wktLiteral