Question:
Who was the head of Taitung County in Jun, 2006?

Context:
 Justin Huang is the head of the government of Taitung County from Dec, 2009 to Dec, 2018. 
 Kuang Li-chen is the head of the government of Taitung County from Apr, 2006 to Dec, 2009. 
 Rao Ching-ling is the head of the government of Taitung County from Dec, 2018 to Dec, 2022.

Answer:
Kuang Li-chen