メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.382522653679 43.7537843817051, 142.382710758532 43.7541538104901, 142.381035600205 43.7546348669562, 142.380957988769 43.7542258604942, 142.380949622666 43.7541720727557, 142.38082457433 43.7535594328091, 142.382206302762 43.7531586018711, 142.382485430616 43.7537106221911, 142.382522653679 43.7537843817051)) ^^http://www.opengis.net/ont/geosparql#wktLiteral