Question: Madau district is named after "Mattau" which is one of four core Sirayan villages and figured heavily in the fomation of colonial policy on what historical island?
Sentence (from "Madou District"): Currently, it is a well-known town in Tainan for its local culinary specialties and historical sites, and has become more prosperous in recent five years due to the presence of two universities.
Relevant evidence: No