Question:
Who was the head of Aachen in Aug, 1955?

Context:
 Kurt Malangré is the head of the government of Aachen from Jan, 1973 to Oct, 1989. 
 Jürgen Linden is the head of the government of Aachen from Oct, 1989 to Oct, 2009. 
 Marcel Philipp is the head of the government of Aachen from Oct, 2009 to Nov, 2020. 
 Hermann Heusch is the head of the government of Aachen from Jan, 1952 to Jan, 1973. 
 Sibylle Keupen is the head of the government of Aachen from Nov, 2020 to Dec, 2022. 
 Albert Maas is the head of the government of Aachen from Jan, 1946 to Jan, 1952.

Answer:
Question:
Who was the head of Aachen in Aug, 1955?

Context:
 Kurt Malangré is the head of the government of Aachen from Jan, 1973 to Oct, 1989. 
 Jürgen Linden is the head of the government of Aachen from Oct, 1989 to Oct, 2009. 
 Marcel Philipp is the head of the government of Aachen from Oct, 2009 to Nov, 2020. 
 Hermann Heusch is the head of the government of Aachen from Jan, 1952 to Jan, 1973. 
 Sibylle Keupen is the head of the government of Aachen from Nov, 2020 to Dec, 2022. 
 Albert Maas is the head of the government of Aachen from Jan, 1946 to Jan, 1952.

Answer:
user
Hermann Heusch
assistant
Question:
Who was the head of Aachen in Aug, 1955?

Context:
 Kurt Malangré is the head of the government of Aachen from Jan, 1973 to Oct, 1989. 
 Jürgen Linden is the head of the government of Aachen from Oct, 1989 to Oct, 2009. 
 Marcel Philipp is the head of the government of Aachen from Oct, 2009 to Nov, 2020. 
 Hermann Heusch is the head of the government of Aachen from Jan, 1952 to Jan, 1973. 
 Sibylle Keupen is the head of the government of Aachen from Nov, 2020 to Dec, 2022. 
 Albert Maas is the head of the government of Aachen from Jan, 1946 to Jan, 1952.

Answer:
user
Sibylle Keupen
Albert Maas
Jürgen Linden
Marcel Philipp
Kurt Malangré
assistant
Question:
Who was the head of Aachen in Aug, 1955?

Context:
 Kurt Malangré is the head of the government of Aachen from Jan, 1973 to Oct, 1989. 
 Jürgen Linden is the head of the government of Aachen from Oct, 1989 to Oct, 2009. 
 Marcel Philipp is the head of the government of Aachen from Oct, 2009 to Nov, 2020. 
 Hermann Heusch is the head of the government of Aachen from Jan, 1952 to Jan, 1973. 
 Sibylle Keupen is the head of the government of Aachen from Nov, 2020 to Dec, 2022. 
 Albert Maas is the head of the government of Aachen from Jan, 1946 to Jan, 1952.

Answer:
user
Hermann Heusch
assistant