Frames file for 'billow' based on survey of sentences in the WSJ
corpus.
Roleset billow.01 Verbnet Class: NONE "to spread over a large area":
Roles:
Arg1:entity billowing
Arg2:direction
Examples:
intransitive (-)
person: ns
tense: present
aspect: ns
voice: active
form: gerund
The Bartlesville , Okla. , oil company late yesterday still had n't said officially what [*T*-1] caused the explosions and fires , which [*T*-2] sent columns of heavy black smoke billowing high into the air .