Question:
Who was the head of Prats de Lluçanès in Dec, 1988?

Context:
 Ramon Vall i Ciuró is the head of the government of Prats de Lluçanès from Jan, 1979 to Jan, 2003. 
 Ramon Besora i Torradeflot is the head of the government of Prats de Lluçanès from Jan, 2003 to Jan, 2007. 
 Lluís Vila i Vilalta is the head of the government of Prats de Lluçanès from Jan, 2007 to Jan, 2015. 
 Jordi Bruch i Franch is the head of the government of Prats de Lluçanès from Jan, 2019 to Dec, 2022. 
 Isaac Peraire Soler is the head of the government of Prats de Lluçanès from Jan, 2015 to Jan, 2019.

Answer:
Ramon Vall i Ciuró