Question: When was the American explorer which Andrew Ellicott  served as a teacher in survey methods for born 
Sentence (from "Meriwether Lewis"): Meriwether Lewis (August 18, 1774 – October 11, 1809) was an American explorer, soldier, politician, and public administrator, best known for his role as the leader of the Lewis and Clark Expedition, also known as the Corps of Discovery, with William Clark.
Relevant evidence: Yes