Roleset id: foam.01 , (cause to) become foamy, Source: , vncls: , framnet: foam.01: FOAM-V NOTES: Frames file for 'foam' based on sentences in wsj. Verbnet entry 43.4, 47.2. (from foam.01-v predicate notes) FOAMING-N NOTES: (from foaming.01-n)
Arg0-DIR: causer of foaminess (vnrole: 43.4-Source)
Arg1-PPT: foamy thing (vnrole: 43.4-Theme, 47.2-Theme)
Example: agentive, no object
person: ns,  tense: ns,  aspect: ns,  voice: ns,  form: gerund
But even though by some estimates it might cost the world as much as $100 billion between now and the year 2000 to convert to other coolants, foaming agents and solvents and to redesign equipment for these less efficient substitutes, the Montreal Protocol's legions of supporters say it is worth it.
Example: ARG0 and ARG1
but I do n't see high gas prices as a reason to start foaming at the mouth and chewing on the carpet .
Arg1: at the mouth