メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.14218764429 38.9334851143072, 141.142065526604 38.9335224571374, 141.141973599021 38.9341510591863, 141.141911745755 38.9344376722678, 141.141876505782 38.934493295063, 141.141770048334 38.9345058925039, 141.140866417081 38.9344034743631, 141.140915910162 38.9339875343063, 141.140951257692 38.9339566152766, 141.141035549684 38.9333834234916, 141.141070990514 38.9333741107317, 141.141058055291 38.933118451538, 141.141070762085 38.932864272587, 141.141898900097 38.9328404847258, 141.14218764429 38.9334851143072)) ^^http://www.opengis.net/ont/geosparql#wktLiteral