Question: What is the acronym of the country's navy that was responsible for discovering Cape Sobral?
Sentence (from "José María Sobral"): Alférez de Navío José María Sobral (April 14, 1880 – April 14, 1961) was an Argentine military scientist, Navy Sub-Lieutenant who rose to prominence by participating in the Swedish Antarctic Expedition (1901–1904) becoming the first Argentine overwinter in Antarctica.
Relevant evidence: No