Question: The Sikorsky S-40 was an American sesquiplane amphibious flying boat built for an airline founded in what year?
Sentence (from "Sikorsky XSS"): The XSS-1 was powered by a 550 hp Pratt & Whitney R-1340D Wasp engine in a strut-mounted pod above the centre-section of the high-mounted gull-wing, forward of the cockpit which was aft of the wing.
Relevant evidence: No