メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.618420056925 35.4255005019472, 136.617933772403 35.4261135441772, 136.617231609604 35.4269941111717, 136.614129629917 35.4254639466171, 136.612959650391 35.4248623933044, 136.612992711458 35.4248209621412, 136.613548398711 35.4240710788978, 136.61360378584 35.4239982371605, 136.613997246416 35.4235895306313, 136.615236208058 35.4241921659935, 136.615412103844 35.4239830846228, 136.618420056925 35.4255005019472)) ^^http://www.opengis.net/ont/geosparql#wktLiteral