Assertion: picric acid | /r/ObjectUse | used as a shell explosive
Facets:
value: during the 1880s
type: TEMPORAL
value: in europe
type: LOCATION
Source sentences:
text: Read More on This Topic explosive: Picric acid and ammonium picrate Picric acid was used as a shell explosive in Europe during the 1880s and carried through World War I on a large scale....