Question:
Who was the head of Râșnov in Dec, 2006?

Context:
 Liviu Butnaru is the head of the government of Râșnov from Jun, 2017 to Oct, 2020. 
 Adrian-Ioan Veștea is the head of the government of Râșnov from Jan, 2004 to Jun, 2016. 
 Liviu-Călin Butnariu is the head of the government of Râșnov from Oct, 2020 to Dec, 2022.

Answer:
Adrian-Ioan Veștea