Question:
Which employer did Aleksei Pogorelov work for in Oct, 1957?

Context:
 Aleksei Pogorelov works for National University of Kharkiv from Jan, 1947 to Jan, 1960. 
 Aleksei Pogorelov works for B Verkin Institute for Low Temperature Physics and Engineering from Jan, 1960 to Jan, 2000. 
 Aleksei Pogorelov works for Steklov Institute of Mathematics from Jan, 2000 to Jan, 2000. 
 Aleksei Pogorelov works for Zhukovsky Air Force Engineering Academy from Jan, 1941 to Jan, 1947.

Answer:
Question:
Which employer did Aleksei Pogorelov work for in Oct, 1957?

Context:
 Aleksei Pogorelov works for National University of Kharkiv from Jan, 1947 to Jan, 1960. 
 Aleksei Pogorelov works for B Verkin Institute for Low Temperature Physics and Engineering from Jan, 1960 to Jan, 2000. 
 Aleksei Pogorelov works for Steklov Institute of Mathematics from Jan, 2000 to Jan, 2000. 
 Aleksei Pogorelov works for Zhukovsky Air Force Engineering Academy from Jan, 1941 to Jan, 1947.

Answer:
user
National University of Kharkiv
assistant
Question:
Which employer did Aleksei Pogorelov work for in Oct, 1957?

Context:
 Aleksei Pogorelov works for National University of Kharkiv from Jan, 1947 to Jan, 1960. 
 Aleksei Pogorelov works for B Verkin Institute for Low Temperature Physics and Engineering from Jan, 1960 to Jan, 2000. 
 Aleksei Pogorelov works for Steklov Institute of Mathematics from Jan, 2000 to Jan, 2000. 
 Aleksei Pogorelov works for Zhukovsky Air Force Engineering Academy from Jan, 1941 to Jan, 1947.

Answer:
user
Steklov Institute of Mathematics
Zhukovsky Air Force Engineering Academy
B Verkin Institute for Low Temperature Physics and Engineering
assistant
Question:
Which employer did Aleksei Pogorelov work for in Oct, 1957?

Context:
 Aleksei Pogorelov works for National University of Kharkiv from Jan, 1947 to Jan, 1960. 
 Aleksei Pogorelov works for B Verkin Institute for Low Temperature Physics and Engineering from Jan, 1960 to Jan, 2000. 
 Aleksei Pogorelov works for Steklov Institute of Mathematics from Jan, 2000 to Jan, 2000. 
 Aleksei Pogorelov works for Zhukovsky Air Force Engineering Academy from Jan, 1941 to Jan, 1947.

Answer:
user
National University of Kharkiv
assistant