Given the task definition and input, reply with output. In this task, you are given a context paragraph, a question based on that and corresponding answer of a question. Your task is to generate supporting fact/knowledge from context paragraph which helps in answering a given question.

Edytha Fleischer (sometimes spelled Editha, Edyta, or Edita Fleischer-Engel) (5 April 1898, Falkenstein - c. 1957, Zurich) was a German soprano and voice teacher. She began her career as a principal artist at the Berlin State Opera and the Salzburg Festival. She was a leading soprano at the Metropolitan Opera from 1926-1936, and at the Teatro Colon in Buenos Aires from 1934 until her retirement from the stage in 1949. Her husband, conductor Erich Engel, was the director of the latter institution. Question: Where is the permanent home of the Opera Comapny Edytha Fleischer began her career as the principal artist for? Answer: Staatsoper Unter den Linden
She began her career as a principal artist at the Berlin State Opera and the Salzburg Festival.