Question:
Which employer did Alex Karczmar work for in Mar, 1953?

Context:
 Alex Karczmar works for Sterling-Winthrop Research Centre from Jan, 1953 to Jan, 1956. 
 Alex Karczmar works for Loyola University Chicago from Jan, 1956 to Jan, 2017. 
 Alex Karczmar works for Georgetown University from Jan, 1946 to Jan, 1953.

Answer:
Question:
Which employer did Alex Karczmar work for in Mar, 1953?

Context:
 Alex Karczmar works for Sterling-Winthrop Research Centre from Jan, 1953 to Jan, 1956. 
 Alex Karczmar works for Loyola University Chicago from Jan, 1956 to Jan, 2017. 
 Alex Karczmar works for Georgetown University from Jan, 1946 to Jan, 1953.

Answer:
user
Sterling-Winthrop Research Centre
assistant
Question:
Which employer did Alex Karczmar work for in Mar, 1953?

Context:
 Alex Karczmar works for Sterling-Winthrop Research Centre from Jan, 1953 to Jan, 1956. 
 Alex Karczmar works for Loyola University Chicago from Jan, 1956 to Jan, 2017. 
 Alex Karczmar works for Georgetown University from Jan, 1946 to Jan, 1953.

Answer:
user
Georgetown University
Loyola University Chicago
assistant
Question:
Which employer did Alex Karczmar work for in Mar, 1953?

Context:
 Alex Karczmar works for Sterling-Winthrop Research Centre from Jan, 1953 to Jan, 1956. 
 Alex Karczmar works for Loyola University Chicago from Jan, 1956 to Jan, 2017. 
 Alex Karczmar works for Georgetown University from Jan, 1946 to Jan, 1953.

Answer:
user
Sterling-Winthrop Research Centre
assistant