sentences:  In 1916, because of an eye complaint, Otto Schwarz was exchanged, and until the war ended, he worked at the Guß- & Armaturenwerk (ironworks) in Kaiserslautern.He received training as a dance teacher, and taught lessons.The income during the hyperinflation in the Weimar Republic and the Great Depression simply was not enough to live on; so Otto Schwarz once again went abroad, this time with the Circus Frankoni to Sweden.