メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.779837152678 35.2497823947206, 136.779758181605 35.2497894659064, 136.779740538029 35.2495401826068, 136.779723447566 35.2487834323452, 136.780756157122 35.2488424391726, 136.781115624124 35.2488635861987, 136.781111649206 35.2496925942732, 136.780757332937 35.2496973784184, 136.780563967923 35.2497139444551, 136.779837152678 35.2497823947206)) ^^http://www.opengis.net/ont/geosparql#wktLiteral