Original sentence: Richter taught as a visiting professor at the Hochschule für Bildende Künste,  in Hamburg, and the Nova Scotia College of Art and Design, and became tenured professor in 1971 at Düsseldorf Art Academy
Edited sentence: Götz together with Sigmar Polke, Konrad Lueg and Gotthard Graupner.Later, Lueg founded the infuential Gallery Konrad Fischer in Düsseldorf.Richter taught as a visiting professor at the Hochschule für Bildende Künste,  in Hamburg, and the Nova Scotia College of Art and Design, and returned in 1971 to Düsseldorf Art Academy as professor for over 15 years.This title also referred to the realist style of art known as ‘Socialist Realism’, then the official art doctrine of the Soviet Union (from which he had fled with his family), but it also commented upon the consumer-driven art ‘doctrine’ of western capitalism.When arrived in West-Germany, he began to study at the famous Kunstakademie Düsseldorf under the Teacher K.With Polke and Lueg he introduced the Term "Kapitalistischer Realismus" ("Capitalistic Realism") as an anti-style of art, appropriating the pictorial short-hand of advertising