Task: Text Categorization
Input (English): Text:  The Aviasud Mistral is a French two-seat ultralight biplane built by Aviasud Engineering. This plane is notable as it has forward swept wings and side-by-side seating. The lower wings are movable and are used as the roll control (wing leveler).The aeroplane (along with the Sirocco) was taken over and is still supported by Aériane in 1989.
Output (English): 6