メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.387677636079 43.0356613289675, 141.388374551338 43.0364169281268, 141.388201892344 43.0365256264296, 141.38798807554 43.0366568013284, 141.387792584114 43.0367802367606, 141.387578276209 43.0369121804721, 141.387395245568 43.0367206283335, 141.386613196664 43.0371919988357, 141.38629624077 43.0369106077235, 141.386026349267 43.0366644547323, 141.385657123365 43.0363369529485, 141.386193494495 43.0360601700846, 141.386612624613 43.0358574027653, 141.387054441469 43.035643270262, 141.387465734293 43.0354315789816, 141.387677636079 43.0356613289675)) ^^http://www.opengis.net/ont/geosparql#wktLiteral