Sikorsky S‑40

Target entity: Sikorsky S‑40
Context triple: [Pratt & Whitney Hornet, application, Sikorsky S‑40]

• A. Sikorsky S‑38
  The Sikorsky S‑38 was a twin‑engine amphibious flying boat of the late 1920s and early 1930s, used for both commercial and exploratory aviation and noted for its distinctive twin‑boom tail.
• B. Bell H-13 Sioux
  The Bell H-13 Sioux is a light, single-rotor helicopter best known for its extensive use by the U.S. Army during the Korean War, particularly in medical evacuation and observation roles.
• C. Curtiss H-16 flying boat
  The Curtiss H-16 was a large American World War I-era patrol flying boat used primarily by the U.S. Navy and British forces for maritime reconnaissance and anti-submarine warfare.
• D. Sikorsky H-5 helicopter
  The Sikorsky H-5 is an early post–World War II American utility and rescue helicopter that played a key role in pioneering rotary-wing military and search-and-rescue operations.
• E. Hughes H-4 Hercules
  The Hughes H-4 Hercules, nicknamed the "Spruce Goose," is a massive experimental World War II-era flying boat and the largest wooden aircraft ever built.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: Sikorsky S‑40
Target entity description: The Sikorsky S‑40 was an early 1930s American amphibious flying boat airliner used primarily by Pan American Airways for long-range overwater routes.

• A. Sikorsky S‑38
  The Sikorsky S‑38 was a twin‑engine amphibious flying boat of the late 1920s and early 1930s, used for both commercial and exploratory aviation and noted for its distinctive twin‑boom tail.
• B. Bell H-13 Sioux
  The Bell H-13 Sioux is a light, single-rotor helicopter best known for its extensive use by the U.S. Army during the Korean War, particularly in medical evacuation and observation roles.
• C. Curtiss H-16 flying boat
  The Curtiss H-16 was a large American World War I-era patrol flying boat used primarily by the U.S. Navy and British forces for maritime reconnaissance and anti-submarine warfare.
• D. Sikorsky H-5 helicopter
  The Sikorsky H-5 is an early post–World War II American utility and rescue helicopter that played a key role in pioneering rotary-wing military and search-and-rescue operations.
• E. Hughes H-4 Hercules
  The Hughes H-4 Hercules, nicknamed the "Spruce Goose," is a massive experimental World War II-era flying boat and the largest wooden aircraft ever built.
• F. None of above. chosen