メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.390422253472 43.7479826674009, 142.390461643049 43.7484923447855, 142.39050979389 43.7489530325747, 142.389006699787 43.7490327345838, 142.388800718243 43.74870648029, 142.387951814785 43.7489430758958, 142.386038702431 43.7494761519409, 142.3859767923 43.7489388976857, 142.385964736396 43.748725169676, 142.385952685959 43.7485072579157, 142.387868057098 43.7479608893804, 142.387865547707 43.7479355415345, 142.39040217364 43.7478066770054, 142.390422253472 43.7479826674009)) ^^http://www.opengis.net/ont/geosparql#wktLiteral