Assertion: butadiene | /r/HasProperty | stored under pressure
Facets:
value: in order to keep it
type: PURPOSE
Source sentences:
text: The styrene is liquid; however, the butadiene is a gas and it has to be stored under pressure in order to keep it in a liquid form.
text: The styrene is a liquid under normal conditions, but the butadiene is a gas and must be stored under pressure to keep it in a liquid form.