<s>[INST] This story says that the region northeast of Lake Bolgoda was inhabited by the Yakkas or Devil Dancers, a tribe of exorcists, nine centuries ago.
In the present day, the region is a centre of Buddhist meditation and study.
The writer of this story describes the Devil Dancers as 'primitives'.
How would you describe the knowledgement about the tribal group that is expressed in the story?[/INST]