Question:
Which employer did Eduard Arzt work for in Apr, 2006?

Context:
 Eduard Arzt works for Saarland University from Oct, 2007 to Dec, 2022. 
 Eduard Arzt works for Stanford University from Oct, 1989 to Sep, 1990. 
 Eduard Arzt works for University of Cambridge from Jan, 1981 to Sep, 1982. 
 Eduard Arzt works for University of Stuttgart from Oct, 1990 to Sep, 2007.

Answer:
Question:
Which employer did Eduard Arzt work for in Apr, 2006?

Context:
 Eduard Arzt works for Saarland University from Oct, 2007 to Dec, 2022. 
 Eduard Arzt works for Stanford University from Oct, 1989 to Sep, 1990. 
 Eduard Arzt works for University of Cambridge from Jan, 1981 to Sep, 1982. 
 Eduard Arzt works for University of Stuttgart from Oct, 1990 to Sep, 2007.

Answer:
user
University of Stuttgart
assistant
Question:
Which employer did Eduard Arzt work for in Apr, 2006?

Context:
 Eduard Arzt works for Saarland University from Oct, 2007 to Dec, 2022. 
 Eduard Arzt works for Stanford University from Oct, 1989 to Sep, 1990. 
 Eduard Arzt works for University of Cambridge from Jan, 1981 to Sep, 1982. 
 Eduard Arzt works for University of Stuttgart from Oct, 1990 to Sep, 2007.

Answer:
user
University of Cambridge
Saarland University
Stanford University
assistant
Question:
Which employer did Eduard Arzt work for in Apr, 2006?

Context:
 Eduard Arzt works for Saarland University from Oct, 2007 to Dec, 2022. 
 Eduard Arzt works for Stanford University from Oct, 1989 to Sep, 1990. 
 Eduard Arzt works for University of Cambridge from Jan, 1981 to Sep, 1982. 
 Eduard Arzt works for University of Stuttgart from Oct, 1990 to Sep, 2007.

Answer:
user
University of Stuttgart
assistant