Definition: Compose a new way to ask the same question. The new question must be asking the exact same thing as the original question does. Without any other information, you should be able to tell that the original question and the new question are the same. Preserve bracketed phrases in your new question. You can change the rest of the question provided the above requirements are satisfied. The new question must have a natural, fluent formulation, as if it were composed by a native English speaker. You will be given three pieces of information to help you create better questions. Those are: "Answer": the answer to the question, e.g., "Honolulu". "Answer Type": the type of the answer, e.g., "Location". "Auxiliary Information" is a detailed description of some concepts mentioned in the question, if any.
Input: original question: What is the aviation incident of [Canadair North Star]?
answer: trans-canada air lines flight 810, stockport air disaster, 1956 boac canadair c4 argonaut accident
answer type: Aviation incident.
auxiliary information: The Canadair North Star was a 1940s Canadian development of the Douglas C-54 / DC-4 aircraft. Instead of radial piston engines found on the Douglas design, Canadair used Rolls-Royce Merlin engines to achieve a faster cruising speed. The prototype flew on 15 July 1946 and the type was used by various airlines and by the RCAF. It provided reliable, if noisy, service through the 1950s and into the 1960s. Some examples continued to fly into the 1970s, converted to cargo aircraft.

The aviation incident of [Canadair North Star] is what?