Question:
Which employer did Helmut Landsberg work for in May, 1940?

Context:
 Helmut Landsberg works for United States Air Force from Jan, 1942 to Jan, 1945. 
 Helmut Landsberg works for University of Chicago from Jan, 1941 to Jan, 1942. 
 Helmut Landsberg works for Pennsylvania State University from Jan, 1934 to Jan, 1941. 
 Helmut Landsberg works for University of Maryland from Jan, 1964 to Jan, 1985.

Answer:
Question:
Which employer did Helmut Landsberg work for in May, 1940?

Context:
 Helmut Landsberg works for United States Air Force from Jan, 1942 to Jan, 1945. 
 Helmut Landsberg works for University of Chicago from Jan, 1941 to Jan, 1942. 
 Helmut Landsberg works for Pennsylvania State University from Jan, 1934 to Jan, 1941. 
 Helmut Landsberg works for University of Maryland from Jan, 1964 to Jan, 1985.

Answer:
user
Pennsylvania State University
assistant
Question:
Which employer did Helmut Landsberg work for in May, 1940?

Context:
 Helmut Landsberg works for United States Air Force from Jan, 1942 to Jan, 1945. 
 Helmut Landsberg works for University of Chicago from Jan, 1941 to Jan, 1942. 
 Helmut Landsberg works for Pennsylvania State University from Jan, 1934 to Jan, 1941. 
 Helmut Landsberg works for University of Maryland from Jan, 1964 to Jan, 1985.

Answer:
user
United States Air Force
University of Chicago
University of Maryland
assistant
Question:
Which employer did Helmut Landsberg work for in May, 1940?

Context:
 Helmut Landsberg works for United States Air Force from Jan, 1942 to Jan, 1945. 
 Helmut Landsberg works for University of Chicago from Jan, 1941 to Jan, 1942. 
 Helmut Landsberg works for Pennsylvania State University from Jan, 1934 to Jan, 1941. 
 Helmut Landsberg works for University of Maryland from Jan, 1964 to Jan, 1985.

Answer:
user
Pennsylvania State University
assistant