メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.922148041971 43.4979142191497, 141.922098710013 43.4979746282008, 141.921826887279 43.4979217352582, 141.921560287408 43.4977923754863, 141.921204368472 43.4978417401601, 141.9205358738 43.4979290923722, 141.920377198885 43.4963415732573, 141.920333401987 43.4961098607445, 141.920995653505 43.4958444236925, 141.920955240183 43.4957050248458, 141.921321082311 43.4956979207181, 141.921593330775 43.4956708888377, 141.921679123319 43.4956954691292, 141.921760020789 43.4957408862285, 141.921797917909 43.4957931066689, 141.921903310509 43.4961432500908, 141.922753130634 43.4960075663602, 141.922991352095 43.496820980717, 141.922536907027 43.4974205156851, 141.922353417281 43.4976626173044, 141.922148041971 43.4979142191497)) ^^http://www.opengis.net/ont/geosparql#wktLiteral