Question:
Which employer did Walter Ledermann work for in May, 1950?

Context:
 Walter Ledermann works for University of Edinburgh from Jan, 1936 to Jan, 1938. 
 Walter Ledermann works for University of Manchester from Jan, 1946 to Jan, 1962. 
 Walter Ledermann works for University of Sussex from Jan, 1962 to Jan, 1978. 
 Walter Ledermann works for University of St Andrews from Jan, 1938 to Jan, 1946.

Answer:
Question:
Which employer did Walter Ledermann work for in May, 1950?

Context:
 Walter Ledermann works for University of Edinburgh from Jan, 1936 to Jan, 1938. 
 Walter Ledermann works for University of Manchester from Jan, 1946 to Jan, 1962. 
 Walter Ledermann works for University of Sussex from Jan, 1962 to Jan, 1978. 
 Walter Ledermann works for University of St Andrews from Jan, 1938 to Jan, 1946.

Answer:
user
University of Manchester
assistant
Question:
Which employer did Walter Ledermann work for in May, 1950?

Context:
 Walter Ledermann works for University of Edinburgh from Jan, 1936 to Jan, 1938. 
 Walter Ledermann works for University of Manchester from Jan, 1946 to Jan, 1962. 
 Walter Ledermann works for University of Sussex from Jan, 1962 to Jan, 1978. 
 Walter Ledermann works for University of St Andrews from Jan, 1938 to Jan, 1946.

Answer:
user
University of St Andrews
University of Sussex
University of Edinburgh
assistant
Question:
Which employer did Walter Ledermann work for in May, 1950?

Context:
 Walter Ledermann works for University of Edinburgh from Jan, 1936 to Jan, 1938. 
 Walter Ledermann works for University of Manchester from Jan, 1946 to Jan, 1962. 
 Walter Ledermann works for University of Sussex from Jan, 1962 to Jan, 1978. 
 Walter Ledermann works for University of St Andrews from Jan, 1938 to Jan, 1946.

Answer:
user
University of Manchester
assistant