メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.475115266919 43.448942812736, 142.47470781439 43.4484914512951, 142.474815536535 43.4482635578532, 142.474844353705 43.4467716699932, 142.474951636058 43.4459074647099, 142.475404150727 43.4441374795399, 142.475855047635 43.4426018255414, 142.475928583586 43.4425730572796, 142.475894585162 43.4426697178239, 142.476900548498 43.4438304273569, 142.478056814102 43.4451214280931, 142.479080037379 43.4462695679827, 142.479590445263 43.4468534835026, 142.478132127776 43.4475164509943, 142.476680617221 43.4482006599914, 142.475115266919 43.448942812736)) ^^http://www.opengis.net/ont/geosparql#wktLiteral