Question:
Who was the chair of Democratic Convergence of Catalonia in Sep, 1982?

Context:
 Vicenç Mauri i Claret is the chair of Democratic Convergence of Catalonia from Apr, 2018 to Dec, 2022. 
 Artur Mas is the chair of Democratic Convergence of Catalonia from Mar, 2012 to Jul, 2016. 
 Jacint Borràs i Manuel is the chair of Democratic Convergence of Catalonia from Jan, 2016 to Sep, 2017. 
 Jordi Pujol is the chair of Democratic Convergence of Catalonia from Jan, 1989 to Jan, 2012. 
 Ramon Trias Fargas is the chair of Democratic Convergence of Catalonia from Jan, 1979 to Jan, 1989.

Answer:
Ramon Trias Fargas