メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.302732983295 43.0972447630752, 141.302478086403 43.0973816229218, 141.30202677276 43.0976344453544, 141.301195000303 43.0968632239429, 141.301653482043 43.0966122222987, 141.301879412989 43.0964678804474, 141.301801720389 43.096396767915, 141.302663335258 43.0958859310187, 141.303568711143 43.0953492177709, 141.303629374654 43.0954045049311, 141.303648675077 43.0954225281737, 141.30371423683 43.0954837638284, 141.303975900322 43.0957232855743, 141.304500911881 43.0961991758818, 141.304564476592 43.0962531505541, 141.303296797415 43.0969464519785, 141.302732983295 43.0972447630752)) ^^http://www.opengis.net/ont/geosparql#wktLiteral