Question: Gilbert Blount worked under what person who is considered  "one of the most ingenious and prolific figures in engineering history" and "one of the 19th century engineering giants"?
Sentence (from "History of ecology"): Important figures and movements include Shelford and the ESA, National Environmental Policy act, George Perkins Marsh, Theodore Roosevelt, Stephen A. Forbes, and post-Dust Bowl conservation.
Relevant evidence: No