メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.493049652873 34.722798546549, 137.492483444467 34.7229669756446, 137.492169643046 34.7218359993018, 137.492205372246 34.7218298150943, 137.493019451735 34.7216892128053, 137.493055214409 34.7216803530641, 137.493343048669 34.7223795357871, 137.493351175736 34.7224829902687, 137.4933091441 34.7225515203922, 137.493118053028 34.7227150222345, 137.49308625768 34.7227484237963, 137.493049652873 34.722798546549)) ^^http://www.opengis.net/ont/geosparql#wktLiteral