メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.166649079224 35.0676120461799, 137.16591163458 35.067725337571, 137.165905745333 35.0675689219507, 137.166031367184 35.0671522886632, 137.166125287698 35.0668187568432, 137.166188218106 35.0668719308694, 137.166402459213 35.0672482214579, 137.166649079224 35.0676120461799)) ^^http://www.opengis.net/ont/geosparql#wktLiteral