メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.355828277404 43.0394308372259, 141.355182587699 43.0391955985743, 141.354408642585 43.0389057601133, 141.354238606512 43.0388757342359, 141.354345993525 43.0382094944657, 141.354347957255 43.0381931932529, 141.354352638347 43.038154758765, 141.354979418282 43.0381859675876, 141.355048439057 43.0381273600178, 141.355130126081 43.0380613958134, 141.355560746393 43.0378279625588, 141.355578932963 43.0380809411607, 141.355828277404 43.0394308372259)) ^^http://www.opengis.net/ont/geosparql#wktLiteral