Question:
Who was the chair of Christian Democratic Union in Sep, 2020?

Context:
 Rainer Barzel is the chair of Christian Democratic Union from Oct, 1971 to Jun, 1973. 
 Wolfgang Schäuble is the chair of Christian Democratic Union from Nov, 1998 to Feb, 2000. 
 Ludwig Erhard is the chair of Christian Democratic Union from Mar, 1966 to May, 1967. 
 Konrad Adenauer is the chair of Christian Democratic Union from Oct, 1950 to Mar, 1966. 
 Helmut Kohl is the chair of Christian Democratic Union from Jun, 1973 to Nov, 1998. 
 Friedrich Merz is the chair of Christian Democratic Union from Jan, 2022 to Dec, 2022. 
 Angela Merkel is the chair of Christian Democratic Union from Apr, 2000 to Dec, 2018. 
 Kurt Georg Kiesinger is the chair of Christian Democratic Union from May, 1967 to Oct, 1971. 
 Armin Laschet is the chair of Christian Democratic Union from Jan, 2021 to Jan, 2022. 
 Annegret Kramp-Karrenbauer is the chair of Christian Democratic Union from Dec, 2018 to Jan, 2021.

Answer:
Question:
Who was the chair of Christian Democratic Union in Sep, 2020?

Context:
 Rainer Barzel is the chair of Christian Democratic Union from Oct, 1971 to Jun, 1973. 
 Wolfgang Schäuble is the chair of Christian Democratic Union from Nov, 1998 to Feb, 2000. 
 Ludwig Erhard is the chair of Christian Democratic Union from Mar, 1966 to May, 1967. 
 Konrad Adenauer is the chair of Christian Democratic Union from Oct, 1950 to Mar, 1966. 
 Helmut Kohl is the chair of Christian Democratic Union from Jun, 1973 to Nov, 1998. 
 Friedrich Merz is the chair of Christian Democratic Union from Jan, 2022 to Dec, 2022. 
 Angela Merkel is the chair of Christian Democratic Union from Apr, 2000 to Dec, 2018. 
 Kurt Georg Kiesinger is the chair of Christian Democratic Union from May, 1967 to Oct, 1971. 
 Armin Laschet is the chair of Christian Democratic Union from Jan, 2021 to Jan, 2022. 
 Annegret Kramp-Karrenbauer is the chair of Christian Democratic Union from Dec, 2018 to Jan, 2021.

Answer:
user
Annegret Kramp-Karrenbauer
assistant
Question:
Who was the chair of Christian Democratic Union in Sep, 2020?

Context:
 Rainer Barzel is the chair of Christian Democratic Union from Oct, 1971 to Jun, 1973. 
 Wolfgang Schäuble is the chair of Christian Democratic Union from Nov, 1998 to Feb, 2000. 
 Ludwig Erhard is the chair of Christian Democratic Union from Mar, 1966 to May, 1967. 
 Konrad Adenauer is the chair of Christian Democratic Union from Oct, 1950 to Mar, 1966. 
 Helmut Kohl is the chair of Christian Democratic Union from Jun, 1973 to Nov, 1998. 
 Friedrich Merz is the chair of Christian Democratic Union from Jan, 2022 to Dec, 2022. 
 Angela Merkel is the chair of Christian Democratic Union from Apr, 2000 to Dec, 2018. 
 Kurt Georg Kiesinger is the chair of Christian Democratic Union from May, 1967 to Oct, 1971. 
 Armin Laschet is the chair of Christian Democratic Union from Jan, 2021 to Jan, 2022. 
 Annegret Kramp-Karrenbauer is the chair of Christian Democratic Union from Dec, 2018 to Jan, 2021.

Answer:
user
Konrad Adenauer
Rainer Barzel
Wolfgang Schäuble
Armin Laschet
Ludwig Erhard
Helmut Kohl
Angela Merkel
Kurt Georg Kiesinger
Friedrich Merz
assistant
Question:
Who was the chair of Christian Democratic Union in Sep, 2020?

Context:
 Rainer Barzel is the chair of Christian Democratic Union from Oct, 1971 to Jun, 1973. 
 Wolfgang Schäuble is the chair of Christian Democratic Union from Nov, 1998 to Feb, 2000. 
 Ludwig Erhard is the chair of Christian Democratic Union from Mar, 1966 to May, 1967. 
 Konrad Adenauer is the chair of Christian Democratic Union from Oct, 1950 to Mar, 1966. 
 Helmut Kohl is the chair of Christian Democratic Union from Jun, 1973 to Nov, 1998. 
 Friedrich Merz is the chair of Christian Democratic Union from Jan, 2022 to Dec, 2022. 
 Angela Merkel is the chair of Christian Democratic Union from Apr, 2000 to Dec, 2018. 
 Kurt Georg Kiesinger is the chair of Christian Democratic Union from May, 1967 to Oct, 1971. 
 Armin Laschet is the chair of Christian Democratic Union from Jan, 2021 to Jan, 2022. 
 Annegret Kramp-Karrenbauer is the chair of Christian Democratic Union from Dec, 2018 to Jan, 2021.

Answer:
user
Annegret Kramp-Karrenbauer
assistant