Question:
Which employer did Dwight Billings work for in Apr, 1978?

Context:
 Dwight Billings works for University of Nevada, Reno from Jan, 1938 to Jan, 1952. 
 Dwight Billings works for University of Tennessee, Knoxville from Jan, 1936 to Jan, 1937. 
 Dwight Billings works for Duke University from Jan, 1952 to Jan, 1980.

Answer:
Question:
Which employer did Dwight Billings work for in Apr, 1978?

Context:
 Dwight Billings works for University of Nevada, Reno from Jan, 1938 to Jan, 1952. 
 Dwight Billings works for University of Tennessee, Knoxville from Jan, 1936 to Jan, 1937. 
 Dwight Billings works for Duke University from Jan, 1952 to Jan, 1980.

Answer:
user
Duke University
assistant
Question:
Which employer did Dwight Billings work for in Apr, 1978?

Context:
 Dwight Billings works for University of Nevada, Reno from Jan, 1938 to Jan, 1952. 
 Dwight Billings works for University of Tennessee, Knoxville from Jan, 1936 to Jan, 1937. 
 Dwight Billings works for Duke University from Jan, 1952 to Jan, 1980.

Answer:
user
University of Nevada, Reno
University of Tennessee, Knoxville
assistant
Question:
Which employer did Dwight Billings work for in Apr, 1978?

Context:
 Dwight Billings works for University of Nevada, Reno from Jan, 1938 to Jan, 1952. 
 Dwight Billings works for University of Tennessee, Knoxville from Jan, 1936 to Jan, 1937. 
 Dwight Billings works for Duke University from Jan, 1952 to Jan, 1980.

Answer:
user
Duke University
assistant