Assertion: gas's amount | /r/HasProperty | needed
Facets:
value: to maintain temperature
type: PURPOSE
Source sentences:
text: Furthermore, some object to the vast amount of farming and the resulting fertilization, pesticide use, and land use conversion that would be needed to produce the additional vegetable oil.
text: Because the insulation is very efficient, only a relatively small amount of boil-off is necessary to maintain temperature.