Question:
Who was the head of Hesperange in Mar, 1987?

Context:
 Marie-Thérèse Gantenbein-Koullen is the head of the government of Hesperange from Dec, 1999 to Jan, 2009. 
 Alphonse Theis is the head of the government of Hesperange from Jan, 1975 to Nov, 1999. 
 Marc Lies is the head of the government of Hesperange from Jan, 2009 to Dec, 2022.

Answer:
Question:
Who was the head of Hesperange in Mar, 1987?

Context:
 Marie-Thérèse Gantenbein-Koullen is the head of the government of Hesperange from Dec, 1999 to Jan, 2009. 
 Alphonse Theis is the head of the government of Hesperange from Jan, 1975 to Nov, 1999. 
 Marc Lies is the head of the government of Hesperange from Jan, 2009 to Dec, 2022.

Answer:
user
Alphonse Theis
assistant
Question:
Who was the head of Hesperange in Mar, 1987?

Context:
 Marie-Thérèse Gantenbein-Koullen is the head of the government of Hesperange from Dec, 1999 to Jan, 2009. 
 Alphonse Theis is the head of the government of Hesperange from Jan, 1975 to Nov, 1999. 
 Marc Lies is the head of the government of Hesperange from Jan, 2009 to Dec, 2022.

Answer:
user
Marie-Thérèse Gantenbein-Koullen
Marc Lies
assistant
Question:
Who was the head of Hesperange in Mar, 1987?

Context:
 Marie-Thérèse Gantenbein-Koullen is the head of the government of Hesperange from Dec, 1999 to Jan, 2009. 
 Alphonse Theis is the head of the government of Hesperange from Jan, 1975 to Nov, 1999. 
 Marc Lies is the head of the government of Hesperange from Jan, 2009 to Dec, 2022.

Answer:
user
Alphonse Theis
assistant