Assertion: weld | /r/HasProperty | turned into lake
Facets:
value: by precipitating it
type: MANNER
Source sentences:
text: Along with other natural dyes like indigo, cochineal, and madder, weld was turned into a "lake" (by precipitating it onto an opaque substance, like chalk) and used in painting and in medieval manuscript illumination as a substitute for the poisonous orpiment and to signify gold.