Task: Explanation
Input (English): Edytha Fleischer (sometimes spelled Editha, Edyta, or Edita Fleischer-Engel) (5 April 1898, Falkenstein - c. 1957, Zürich) 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 Colón 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
Output (English):  She began her career as a principal artist at the Berlin State Opera and the Salzburg Festival.