Assertion: liquid oxygen | /r/ObjectUse | used as propellant
Facets:
value: in the first intercontinental ballistic missiles
type: TEMPORAL
Source sentences:
text: It was also used as a propellant in the first Intercontinental Ballistic Missiles (ICBMs), but its use was discontinued because it is a cryogenic (of a very low temperature) liquid and needs to be replenished too often.