Question:
Which employer did Tony Heinz work for in Sep, 2018?

Context:
 Tony Heinz works for Stanford University from Jan, 2015 to Dec, 2022. 
 Tony Heinz works for IBM Thomas J. Watson Research Center from Jan, 1983 to Jan, 1995. 
 Tony Heinz works for Columbia University from Jan, 1995 to Jan, 2014.

Answer:
Question:
Which employer did Tony Heinz work for in Sep, 2018?

Context:
 Tony Heinz works for Stanford University from Jan, 2015 to Dec, 2022. 
 Tony Heinz works for IBM Thomas J. Watson Research Center from Jan, 1983 to Jan, 1995. 
 Tony Heinz works for Columbia University from Jan, 1995 to Jan, 2014.

Answer:
user
Stanford University
assistant
Question:
Which employer did Tony Heinz work for in Sep, 2018?

Context:
 Tony Heinz works for Stanford University from Jan, 2015 to Dec, 2022. 
 Tony Heinz works for IBM Thomas J. Watson Research Center from Jan, 1983 to Jan, 1995. 
 Tony Heinz works for Columbia University from Jan, 1995 to Jan, 2014.

Answer:
user
Columbia University
IBM Thomas J. Watson Research Center
assistant
Question:
Which employer did Tony Heinz work for in Sep, 2018?

Context:
 Tony Heinz works for Stanford University from Jan, 2015 to Dec, 2022. 
 Tony Heinz works for IBM Thomas J. Watson Research Center from Jan, 1983 to Jan, 1995. 
 Tony Heinz works for Columbia University from Jan, 1995 to Jan, 2014.

Answer:
user
Stanford University
assistant