Assertion: stone boiling | /r/ObjectUse | used by people
Facets:
value: most frequently
type: DEGREE
value: according to a comparative ethnography study
type: OTHER
Source sentences:
text: According to a comparative ethnography study conducted by American anthropologist Kit Nelson, stone boiling is used most frequently by people who live ​in the temperate zones on earth, between 41 and 68 degrees latitude.