Assertion: fountain pen's ink | /r/CreatedBy | mixing iron salt crystals
Facets:
value: with tannic acid
type: OTHER
value: from oak galls
type: TRANSITIVE-OBJECT
value: traditionally
type: OTHER
Source sentences:
text: These inks were traditionally made by mixing iron salt crystals with tannic acid from oak galls 2 —hence
text: These inks were traditionally made by mixing iron salt crystals with tannic acid from oak galls 2 —hence