メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.441104291321 43.8166590172829, 142.441154088338 43.816690016305, 142.441577289241 43.8169624146432, 142.441620270621 43.8169835966967, 142.442127688167 43.8173096472752, 142.442613192804 43.8176100653146, 142.441476903763 43.8185853103267, 142.440969097347 43.8182737958864, 142.440460144037 43.8179470226723, 142.439957980445 43.817627021816, 142.439441694715 43.8172963886213, 142.440600756284 43.8163368766283, 142.441104291321 43.8166590172829)) ^^http://www.opengis.net/ont/geosparql#wktLiteral