Question:
Which employer did Shigeo Sasaki work for in Oct, 1953?

Context:
 Shigeo Sasaki works for Institute for Advanced Study from Jan, 1952 to Jan, 1954. 
 Shigeo Sasaki works for Tokyo University of Science from Jan, 1976 to Jan, 1987. 
 Shigeo Sasaki works for Tohoku University from Jan, 1954 to Jan, 1976.

Answer:
Question:
Which employer did Shigeo Sasaki work for in Oct, 1953?

Context:
 Shigeo Sasaki works for Institute for Advanced Study from Jan, 1952 to Jan, 1954. 
 Shigeo Sasaki works for Tokyo University of Science from Jan, 1976 to Jan, 1987. 
 Shigeo Sasaki works for Tohoku University from Jan, 1954 to Jan, 1976.

Answer:
user
Institute for Advanced Study
assistant
Question:
Which employer did Shigeo Sasaki work for in Oct, 1953?

Context:
 Shigeo Sasaki works for Institute for Advanced Study from Jan, 1952 to Jan, 1954. 
 Shigeo Sasaki works for Tokyo University of Science from Jan, 1976 to Jan, 1987. 
 Shigeo Sasaki works for Tohoku University from Jan, 1954 to Jan, 1976.

Answer:
user
Tokyo University of Science
Tohoku University
assistant
Question:
Which employer did Shigeo Sasaki work for in Oct, 1953?

Context:
 Shigeo Sasaki works for Institute for Advanced Study from Jan, 1952 to Jan, 1954. 
 Shigeo Sasaki works for Tokyo University of Science from Jan, 1976 to Jan, 1987. 
 Shigeo Sasaki works for Tohoku University from Jan, 1954 to Jan, 1976.

Answer:
user
Institute for Advanced Study
assistant