メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.32889003225 43.0981957950021, 141.328386863768 43.0984122870475, 141.327891116429 43.0986456452788, 141.327428876209 43.0988587355699, 141.326769474614 43.0980964674116, 141.327165218981 43.097901478664, 141.32722170876 43.0978720454971, 141.327483596636 43.097758329452, 141.327740511186 43.0976369776551, 141.327822862191 43.0975853180947, 141.328223348629 43.097412869803, 141.32889003225 43.0981957950021)) ^^http://www.opengis.net/ont/geosparql#wktLiteral