メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.609885771836 33.2435261231238, 131.610257785607 33.2435678013538, 131.611917588591 33.2437355951306, 131.611841617136 33.2443092793367, 131.611772591817 33.2448691022995, 131.610103364343 33.2447053125614, 131.609514840716 33.2446567802175, 131.608270770961 33.2445300578573, 131.607069221765 33.2444295342777, 131.607108964553 33.2439524720344, 131.607178074345 33.2432372995695, 131.608852107767 33.2434066366779, 131.609885771836 33.2435261231238)) ^^http://www.opengis.net/ont/geosparql#wktLiteral