Original sentence: In Katowice, according to Czesław Madajczyk, one of the harshests centres of opression was the prison on Mikołowska street where people were reported to be murdered by Germans through the use of guillotine
Edited sentence: In Katowice, according to Czesław Madajczyk, one of the harshests centres of oppression was the prison on Mikołowska street where people were reported to be murdered by Germans through the use of guillotine