Input (grade 13): The Free City had a population of 357,000 (/O1919/O), 95% of whom were Germans, Encyclopædia Britannica Year Book, 1938 with the rest mainly either Kashubians or Poles.
Output (grade 12): 98% were German-speakers, Encyclopaedia Britannica Year Book, 1938 with the rest mainly speaking either Kashubian or Polish.