Question:
Who was the chair of Naturschutzbund Deutschland in Dec, 2006?

Context:
 Olaf Tschimpke is the chair of Naturschutzbund Deutschland from Jun, 2003 to Nov, 2019. 
 Jochen Flasbarth is the chair of Naturschutzbund Deutschland from Jan, 1992 to Jan, 2003. 
 Claus König is the chair of Naturschutzbund Deutschland from Jan, 1969 to Jan, 1984. 
 Hans Scholten is the chair of Naturschutzbund Deutschland from Jan, 1984 to Jan, 1988. 
 Sebastian Pfeifer is the chair of Naturschutzbund Deutschland from Jan, 1966 to Jan, 1969. 
 Klaus Dürkop is the chair of Naturschutzbund Deutschland from Jan, 1988 to Jan, 1992. 
 Berndt Heydemann is the chair of Naturschutzbund Deutschland from Jan, 1984 to Nov, 1984. 
 Jörg-Andreas Krüger is the chair of Naturschutzbund Deutschland from Nov, 2019 to Dec, 2022.

Answer:
Question:
Who was the chair of Naturschutzbund Deutschland in Dec, 2006?

Context:
 Olaf Tschimpke is the chair of Naturschutzbund Deutschland from Jun, 2003 to Nov, 2019. 
 Jochen Flasbarth is the chair of Naturschutzbund Deutschland from Jan, 1992 to Jan, 2003. 
 Claus König is the chair of Naturschutzbund Deutschland from Jan, 1969 to Jan, 1984. 
 Hans Scholten is the chair of Naturschutzbund Deutschland from Jan, 1984 to Jan, 1988. 
 Sebastian Pfeifer is the chair of Naturschutzbund Deutschland from Jan, 1966 to Jan, 1969. 
 Klaus Dürkop is the chair of Naturschutzbund Deutschland from Jan, 1988 to Jan, 1992. 
 Berndt Heydemann is the chair of Naturschutzbund Deutschland from Jan, 1984 to Nov, 1984. 
 Jörg-Andreas Krüger is the chair of Naturschutzbund Deutschland from Nov, 2019 to Dec, 2022.

Answer:
user
Olaf Tschimpke
assistant
Question:
Who was the chair of Naturschutzbund Deutschland in Dec, 2006?

Context:
 Olaf Tschimpke is the chair of Naturschutzbund Deutschland from Jun, 2003 to Nov, 2019. 
 Jochen Flasbarth is the chair of Naturschutzbund Deutschland from Jan, 1992 to Jan, 2003. 
 Claus König is the chair of Naturschutzbund Deutschland from Jan, 1969 to Jan, 1984. 
 Hans Scholten is the chair of Naturschutzbund Deutschland from Jan, 1984 to Jan, 1988. 
 Sebastian Pfeifer is the chair of Naturschutzbund Deutschland from Jan, 1966 to Jan, 1969. 
 Klaus Dürkop is the chair of Naturschutzbund Deutschland from Jan, 1988 to Jan, 1992. 
 Berndt Heydemann is the chair of Naturschutzbund Deutschland from Jan, 1984 to Nov, 1984. 
 Jörg-Andreas Krüger is the chair of Naturschutzbund Deutschland from Nov, 2019 to Dec, 2022.

Answer:
user
Jochen Flasbarth
Berndt Heydemann
Sebastian Pfeifer
Claus König
Jörg-Andreas Krüger
Hans Scholten
Klaus Dürkop
assistant
Question:
Who was the chair of Naturschutzbund Deutschland in Dec, 2006?

Context:
 Olaf Tschimpke is the chair of Naturschutzbund Deutschland from Jun, 2003 to Nov, 2019. 
 Jochen Flasbarth is the chair of Naturschutzbund Deutschland from Jan, 1992 to Jan, 2003. 
 Claus König is the chair of Naturschutzbund Deutschland from Jan, 1969 to Jan, 1984. 
 Hans Scholten is the chair of Naturschutzbund Deutschland from Jan, 1984 to Jan, 1988. 
 Sebastian Pfeifer is the chair of Naturschutzbund Deutschland from Jan, 1966 to Jan, 1969. 
 Klaus Dürkop is the chair of Naturschutzbund Deutschland from Jan, 1988 to Jan, 1992. 
 Berndt Heydemann is the chair of Naturschutzbund Deutschland from Jan, 1984 to Nov, 1984. 
 Jörg-Andreas Krüger is the chair of Naturschutzbund Deutschland from Nov, 2019 to Dec, 2022.

Answer:
user
Olaf Tschimpke
assistant