メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.335944187641 43.0561737957514, 141.337009883068 43.0563108708446, 141.336858405709 43.0569208252628, 141.336731595899 43.0574582550223, 141.33658938653 43.0574372855756, 141.335725190975 43.0573186263066, 141.335460269402 43.0572814128977, 141.335176948471 43.0572432090829, 141.335239883173 43.0569581745766, 141.335301159413 43.0567137076222, 141.335385778147 43.0563764511021, 141.335452834205 43.0561043908811, 141.335475335504 43.0559843072317, 141.33597241221 43.0560492566466, 141.335944187641 43.0561737957514)) ^^http://www.opengis.net/ont/geosparql#wktLiteral