メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.781603923864 35.4137644992165, 136.779745065636 35.413832287883, 136.779601995689 35.413358717977, 136.782130313831 35.413306149914, 136.782135259359 35.4132607806374, 136.782696871939 35.4132463248779, 136.782721536735 35.4137323679582, 136.781603923864 35.4137644992165)) ^^http://www.opengis.net/ont/geosparql#wktLiteral