メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.548728590865 39.4244673183268, 140.547606702753 39.4248282769505, 140.546545538452 39.4251424690642, 140.546285903852 39.4247693388014, 140.546082870123 39.4244344201717, 140.546038299415 39.4242231175333, 140.545768807473 39.4234832770366, 140.546717242398 39.423312635774, 140.547061043468 39.4232262135158, 140.548129043792 39.4229698797371, 140.548728590865 39.4244673183268)) ^^http://www.opengis.net/ont/geosparql#wktLiteral