Hokkaido now has some fascinating museums devoted to Ainu life, and the village of Shiraoi preserves the artifacts and folkcrafts of their culture.
Ainu life is fundamental to Japanese culture. 
mnli hypothesis: Ainu life is fundamental to Japanese culture.  premise: Hokkaido now has some fascinating museums devoted to Ainu life, and the village of Shiraoi preserves the artifacts and folkcrafts of their culture.