メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.849869642798 35.2572788527625, 136.849866062616 35.2581994097084, 136.849849054407 35.2588916207212, 136.849010636358 35.2588965875333, 136.848898381871 35.2589017132065, 136.847932362121 35.2588955591176, 136.8479516222 35.2581907510472, 136.848092451616 35.2581892940861, 136.84809827241 35.2572651534722, 136.848109233722 35.2561460974813, 136.849331599883 35.2561538382308, 136.849883906933 35.2561552952825, 136.849869642798 35.2572788527625)) ^^http://www.opengis.net/ont/geosparql#wktLiteral