メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.390599082725 43.0407865398118, 141.390822114058 43.0409852089652, 141.391225157765 43.0413393220103, 141.391790607542 43.0418397428261, 141.390944507381 43.0423570798531, 141.390331613646 43.0427280447454, 141.390189981217 43.0426050992501, 141.389866834793 43.0423245851198, 141.389348575497 43.0418718428176, 141.388822079498 43.0414190353645, 141.389434978171 43.0410541964397, 141.389884271742 43.0407735069055, 141.39029261075 43.0405208518646, 141.390599082725 43.0407865398118)) ^^http://www.opengis.net/ont/geosparql#wktLiteral