メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.975492398789 43.549196407569, 144.975247977739 43.5490503512356, 144.975033799784 43.5489445687063, 144.974420375863 43.5486595392663, 144.974261119337 43.5485882018284, 144.974526562886 43.5483430346474, 144.974761619998 43.5484359440097, 144.974983850994 43.5482787899216, 144.975271183961 43.5484075091158, 144.975464989813 43.5482631616785, 144.975699658885 43.5484245688271, 144.975883454219 43.5482855233715, 144.976368724643 43.5485714247084, 144.975492398789 43.549196407569)) ^^http://www.opengis.net/ont/geosparql#wktLiteral