Assertion: ammonia | /r/HasProperty | stored under pressure
Facets:
value: at a low temperature
type: TEMPORAL
value: at a fertiliser plant in potchefstroom
type: LOCATION
Source sentences:
text: At a fertiliser plant in Potchefstroom, South Africa, the ammonia was stored under pressure in four 50-ton horizontal cylinders of the type known as bullets.
text: Ammonia boils at 33.34 degrees and must be stored under pressure or at a low temperature.