メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.378491874186 43.084725668769, 141.379104198812 43.0845661795909, 141.379790387119 43.0843876265709, 141.379966288051 43.0848796479976, 141.380069140869 43.0851777805646, 141.380140445061 43.0853866362899, 141.378695601064 43.0857844031154, 141.378182736447 43.0857840858478, 141.378125018267 43.0856458720514, 141.378005689156 43.0853666014029, 141.377898838287 43.0851208324527, 141.377584683942 43.084392855805, 141.378274128064 43.0842013268686, 141.378491874186 43.084725668769)) ^^http://www.opengis.net/ont/geosparql#wktLiteral