Assertion: dumping | /r/HasProperty | necessary
Facets:
value: for those mid-flight aircraft
type: TRANSITIVE-OBJECT
Source sentences:
text: Many of these flights were fuelled for travel well into the American interior; for those mid-flight aircraft unable to land due to excessive fuel weight, dumping was necessary.
text: A: The fuel evaporates, and when dumping is necessary it is normally done over an area of little population or over water.