What is the acronym of the country's navy that was responsible for discovering Cape Sobral?
Cape Sobral: Cape Sobral ( ) is a high, mainly snow-covered elevation which surmounts the south end of Sobral Peninsula, and forming the east side of the entrance to Mundraga Bay on the east coast of Graham Land in Antarctica. Cape Sobral:  Discovered by the Swedish Antarctic Expedition, 1901–04, under Nordenskjold, who named it for Lieutenant Jose M. Sobral of the Argentine Navy, asst. physicist and meteorologist with the expedition. Argentine Navy: The Navy of the Argentine Republic or Argentine Navy (Spanish: "Armada de la República Argentina" — ARA, also "Armada Argentina") is the navy of Argentina.
ARA