メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.171457202594 43.9168085529317, 144.171723003311 43.9169247152346, 144.173404868323 43.9175935657854, 144.173607269121 43.9176740562452, 144.173814093299 43.9177468211997, 144.17355091715 43.9180927119975, 144.173315404579 43.9180413866055, 144.171160370112 43.9175719508261, 144.170924277842 43.9175205239327, 144.169941615412 43.9174006784181, 144.170350037623 43.9168579740471, 144.170397803439 43.9167945703935, 144.170826332847 43.9162663848091, 144.171610553161 43.9165983618347, 144.171457202594 43.9168085529317)) ^^http://www.opengis.net/ont/geosparql#wktLiteral