メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.179083150602 43.5211378898452, 142.179018116674 43.5216752057468, 142.178931379736 43.5221882470255, 142.178825655045 43.5228364334631, 142.178689922115 43.5238116260373, 142.178014572698 43.5237558348866, 142.175764243507 43.5235783814955, 142.175742375874 43.5235766799224, 142.175604289868 43.5236788737072, 142.175117985809 43.5233023828894, 142.176002775676 43.5226636264477, 142.177267383429 43.5217366449884, 142.178176047507 43.5210706025263, 142.179083150602 43.5211378898452)) ^^http://www.opengis.net/ont/geosparql#wktLiteral