Assertion: animal skin | /r/HasProperty | tanned
Facets:
value: until the late 1800s
type: TEMPORAL
Source sentences:
text: Until the late 1800s, animal skin was air- or salt-dried and tanned with vegetable tannins or oil, but today animal skin is turned into finished leather with a variety of much more dangerous substances, including mineral salts, formaldehyde, coal-tar derivatives, and various oils, dyes, and finishes—some of them cyanide-based.
text: Until the late 1800s, animal skin was air- or salt-dried and tanned with vegetable tannins or oil, but today, animal skin is turned into finished leather with a variety of much more dangerous substances, including formaldehyde, coal-tar derivatives, mineral salts, and various oils, dyes, and finishes, some of which are cyanide-based.