Question: A British officer of the Royal Navy best known for his 1791-95 expedition first charted what in 1793?
Sentence (from "George Vancouver"): Captain George Vancouver (22 June 1757 – 10 May 1798) was a British officer of the Royal Navy, best known for his 1791–95 expedition, which explored and charted North America's northwestern Pacific Coast regions, including the coasts of contemporary Alaska, British Columbia, Washington, and Oregon.
Relevant evidence: Yes