Task: Text Categorization
Input (English): Text:  The Adcox Student Prince was a two-seat open-cockpit biplane designed by Basil Smith and built by the students of the US Adcox Aviation Trade School in 1929. It was based on the one-off Adcox Special and the first example flew on 17 September. A single example of a Student Prince X was produced in 1931 powered by a 90hp ACE engine.
Output (English): 6