Assertion: human urine | /r/ObjectUse | used in a number of cultures
Facets:
value: to tan animal skins
type: PURPOSE
value: throughout history
type: TEMPORAL
Source sentences:
text: As for the second set of specious etymologies put forth by the e-mail about the disposal of urine, we note that while human urine has been used in a number of cultures throughout history to tan animal skins, such tanning was typically done by families or small bands of semi-related people to process the skins of animals they’d hunted or raised themselves.