メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.394848152558 43.0843110613488, 141.393576818078 43.0848416003871, 141.393223684398 43.0843845552582, 141.393024001254 43.0841109544546, 141.392917711744 43.0839653487388, 141.392794758862 43.0838175087521, 141.392625979816 43.0835985733579, 141.392958555009 43.0834733497044, 141.393940976913 43.0831005125385, 141.394504421745 43.0828837561541, 141.394932508442 43.083470271961, 141.395404342585 43.0840853155088, 141.394848152558 43.0843110613488)) ^^http://www.opengis.net/ont/geosparql#wktLiteral