context: For a brief period after his graduation, he worked as a stonemason, producing gravestones in Berlin.
source: Hartwig accepted the offer going on to serve as a teacher and head of the sculpture department from 1921 to 1925.
reference_original: Hartwig aceitou a oferta de atuar como professora e chefe do departamento de escultora de 1921 à 1925.
reference_flipped: Hartwig aceitou a oferta deatuar como professora e chefe do departamento de escultora de 1921 à 1925.