Assertion: gunpowder | /r/HasProperty | discovered by different cultures
Facets:
value: independently
type: MANNER
value: probably
type: DEGREE
value: at different times
type: TEMPORAL
Source sentences:
text: The article currently puts forward the view that gunpowder may have been discovered independently by different cultures.
text: However, some historians believe that gunpowder was probably discovered independently by different cultures at different times.
text: Other historians believe that gunpowder was probably discovered independently by different cultures at different times.