Assertion: mustard gas | /r/HasProperty | developed by french chemist
Facets:
value: possibly
type: DEGREE
Source sentences:
text: They were the first people who proposed this gas to the military to use as a weapon in 1916.Although mustard gas could possibly been developed as early as 1822 by a French chemist, Cesar-Mansuete Desperetez.
text: Although mustard gas could possibly been developed as early as 1822 by a French chemist, Cesar-Mansuete Desperetez.