Question:
Who was the head of Incheon in Nov, 2007?

Context:
 Yoo Jeong-bok is the head of the government of Incheon from Jul, 2014 to Jun, 2018. 
 Song Young-gil is the head of the government of Incheon from Jul, 2010 to Jun, 2014. 
 Ahn Sang-soo is the head of the government of Incheon from Jul, 2002 to Jun, 2010. 
 Park Nam-choon is the head of the government of Incheon from Jul, 2018 to Dec, 2022.

Answer:
Ahn Sang-soo