メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.176018504386 34.6524929244063, 135.174859582586 34.6525099591381, 135.174014139019 34.6525112952983, 135.173722272046 34.6525065501213, 135.173755212796 34.6515315879828, 135.174066958952 34.6515302802405, 135.174076940935 34.6517085365573, 135.177136225065 34.6516400342431, 135.177155585921 34.6524737763919, 135.176018504386 34.6524929244063)) ^^http://www.opengis.net/ont/geosparql#wktLiteral