メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.021684896565 37.8236651070163, 139.022248400211 37.8236740280823, 139.022209632961 37.8250598490553, 139.021633410208 37.8250546433061, 139.019863914896 37.8250129988963, 139.019090777641 37.8249948461774, 139.019117536264 37.8246393760705, 139.019166108121 37.8233788179296, 139.019272168813 37.8233814512043, 139.019918434225 37.823399032755, 139.019911154456 37.823614331275, 139.021684896565 37.8236651070163)) ^^http://www.opengis.net/ont/geosparql#wktLiteral