Question:
Who was the chair of Christian Democratic Union in May, 2021?

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

Answer:
Question:
Who was the chair of Christian Democratic Union in May, 2021?

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

Answer:
user
Armin Laschet
assistant
Question:
Who was the chair of Christian Democratic Union in May, 2021?

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

Answer:
user
Konrad Adenauer
Rainer Barzel
Wolfgang Schäuble
Ludwig Erhard
Helmut Kohl
Annegret Kramp-Karrenbauer
Angela Merkel
Kurt Georg Kiesinger
Friedrich Merz
assistant
Question:
Who was the chair of Christian Democratic Union in May, 2021?

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

Answer:
user
Armin Laschet
assistant