Assertion: seal's fat | /r/ObjectUse | used as a constituent of soap
Facets:
value: often
type: TEMPORAL
Source sentences:
text: Seals have been used for their pelts, their flesh, and their fat, which was often used as lamp fuel, lubricants, cooking oil, a constituent of soap, the liquid base for red ochre paint, and for processing materials such as leather and jute.