Question:
Which employer did Hans Petersson work for in Jan, 1939?

Context:
 Hans Petersson works for Karl-Ferdinands-Universität from Jan, 1939 to Jan, 1941. 
 Hans Petersson works for University of Strasbourg from Jan, 1941 to Jan, 1944. 
 Hans Petersson works for University of Hamburg from Jan, 1947 to Jan, 1953. 
 Hans Petersson works for University of Münster from Jan, 1953 to Jan, 1970.

Answer:
Question:
Which employer did Hans Petersson work for in Jan, 1939?

Context:
 Hans Petersson works for Karl-Ferdinands-Universität from Jan, 1939 to Jan, 1941. 
 Hans Petersson works for University of Strasbourg from Jan, 1941 to Jan, 1944. 
 Hans Petersson works for University of Hamburg from Jan, 1947 to Jan, 1953. 
 Hans Petersson works for University of Münster from Jan, 1953 to Jan, 1970.

Answer:
user
Karl-Ferdinands-Universität
assistant
Question:
Which employer did Hans Petersson work for in Jan, 1939?

Context:
 Hans Petersson works for Karl-Ferdinands-Universität from Jan, 1939 to Jan, 1941. 
 Hans Petersson works for University of Strasbourg from Jan, 1941 to Jan, 1944. 
 Hans Petersson works for University of Hamburg from Jan, 1947 to Jan, 1953. 
 Hans Petersson works for University of Münster from Jan, 1953 to Jan, 1970.

Answer:
user
University of Strasbourg
University of Münster
University of Hamburg
assistant
Question:
Which employer did Hans Petersson work for in Jan, 1939?

Context:
 Hans Petersson works for Karl-Ferdinands-Universität from Jan, 1939 to Jan, 1941. 
 Hans Petersson works for University of Strasbourg from Jan, 1941 to Jan, 1944. 
 Hans Petersson works for University of Hamburg from Jan, 1947 to Jan, 1953. 
 Hans Petersson works for University of Münster from Jan, 1953 to Jan, 1970.

Answer:
user
Karl-Ferdinands-Universität
assistant