Question:
Who was the head of Grödersby in Sep, 1987?

Context:
 Ernst Detlef Mangelsen is the head of the government of Grödersby from Mar, 1988 to Sep, 2002. 
 Helmut Andresen is the head of the government of Grödersby from Oct, 2002 to Dec, 2022. 
 August Andresen is the head of the government of Grödersby from Mar, 1970 to Mar, 1988.

Answer:
Question:
Who was the head of Grödersby in Sep, 1987?

Context:
 Ernst Detlef Mangelsen is the head of the government of Grödersby from Mar, 1988 to Sep, 2002. 
 Helmut Andresen is the head of the government of Grödersby from Oct, 2002 to Dec, 2022. 
 August Andresen is the head of the government of Grödersby from Mar, 1970 to Mar, 1988.

Answer:
user
August Andresen
assistant
Question:
Who was the head of Grödersby in Sep, 1987?

Context:
 Ernst Detlef Mangelsen is the head of the government of Grödersby from Mar, 1988 to Sep, 2002. 
 Helmut Andresen is the head of the government of Grödersby from Oct, 2002 to Dec, 2022. 
 August Andresen is the head of the government of Grödersby from Mar, 1970 to Mar, 1988.

Answer:
user
Helmut Andresen
Ernst Detlef Mangelsen
assistant
Question:
Who was the head of Grödersby in Sep, 1987?

Context:
 Ernst Detlef Mangelsen is the head of the government of Grödersby from Mar, 1988 to Sep, 2002. 
 Helmut Andresen is the head of the government of Grödersby from Oct, 2002 to Dec, 2022. 
 August Andresen is the head of the government of Grödersby from Mar, 1970 to Mar, 1988.

Answer:
user
August Andresen
assistant