Assertion: plutonium | /r/ObjectUse | used in explosive
Facets:
value: for a long time
type: TEMPORAL
value: in nuclear weapons
type: LOCATION
Source sentences:
text: Plutonium is a dangerous substance that has been used in explosives for a long time.
text: Plutonium is used as an explosive in nuclear weapons.
text: Plutonium has been used in explosives for a long time.