Roleset id: mask.01 , cover with a mask, Source: , vncls: , framnet: mask.01: MASK-V NOTES: Frames file for 'mask' based on sentences in wsj and automaticexpansion via verbnet. (from mask.01-v predicate notes)
Arg0-PAG: coverer (vnrole: 9.8-Agent)
Arg1-GOL: thing covered (vnrole: 9.8-Destination)
Arg2-PPT: instrument, mask (vnrole: 9.8-Theme)
Example: instrumental subject
person: ns,  tense: past,  aspect: ns,  voice: active,  form: full
Analysts said the results were as expected, but several added that the earnings masked underlying weaknesses in several businesses.
Arg2: the earnings
Arg1: underlying weaknesses in several businesses
Example: passive with instrument
person: ns,  tense: present,  aspect: ns,  voice: passive,  form: participle
Real estate analyst Lloyd Lynford says [the Northeast's distress]-1 is masked *trace*-1 by relatively low vacancy rates.
Arg2: by relatively low vacancy rates
Example: ARG0 and ARG1
They hollow out the bat and stick the cork in there to mask the hollow sound .
Arg1: the hollow sound