Convair 440

Target entity: Convair 440
Context triple: [Convair, notableProduct, Convair 440]

• A. Convair 240
  The Convair 240 is a twin‑engine, pressurized short- to medium-haul airliner introduced in the late 1940s and widely used by airlines and military operators around the world.
• B. Beechcraft C-45 Expeditor
  The Beechcraft C-45 Expeditor is a twin-engine military transport and trainer aircraft, derived from the Beechcraft Model 18, that was widely used by the United States and allied air forces from World War II through the postwar era.
• C. Douglas C-54 Skymaster
  The Douglas C-54 Skymaster is a four‑engine, long‑range military transport aircraft developed from the DC‑4 airliner and widely used by the U.S. and allied forces during and after World War II.
• D. Convair T-29
  The Convair T-29 is a military trainer and transport aircraft developed from the Convair 240 airliner and used primarily by the U.S. Air Force for navigation and radar training.
• E. Lockheed C‑69 Constellation
  The Lockheed C‑69 Constellation was a World War II-era four‑engined military transport aircraft that served as the precursor to the famous Lockheed Constellation airliner.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: Convair 440
Target entity description: The Convair 440 is a twin-engine, short- to medium-range commercial airliner developed in the 1950s as an improved, pressurized variant of Convair’s successful series of piston-powered passenger aircraft.

• A. Convair 240
  The Convair 240 is a twin‑engine, pressurized short- to medium-haul airliner introduced in the late 1940s and widely used by airlines and military operators around the world.
• B. Beechcraft C-45 Expeditor
  The Beechcraft C-45 Expeditor is a twin-engine military transport and trainer aircraft, derived from the Beechcraft Model 18, that was widely used by the United States and allied air forces from World War II through the postwar era.
• C. Douglas C-54 Skymaster
  The Douglas C-54 Skymaster is a four‑engine, long‑range military transport aircraft developed from the DC‑4 airliner and widely used by the U.S. and allied forces during and after World War II.
• D. Convair T-29
  The Convair T-29 is a military trainer and transport aircraft developed from the Convair 240 airliner and used primarily by the U.S. Air Force for navigation and radar training.
• E. Lockheed C‑69 Constellation
  The Lockheed C‑69 Constellation was a World War II-era four‑engined military transport aircraft that served as the precursor to the famous Lockheed Constellation airliner.
• F. None of above. chosen