メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.338472338313 43.0895496369086, 141.338348525 43.0900430606912, 141.338125546899 43.0909204609178, 141.337601751803 43.0908521411741, 141.33713130404 43.0907843153121, 141.336607779629 43.0907171886386, 141.33683428235 43.0898493840693, 141.336958045934 43.0893470997854, 141.337394161809 43.0894062831038, 141.33758240703 43.0894313129054, 141.338472338313 43.0895496369086)) ^^http://www.opengis.net/ont/geosparql#wktLiteral