Predicate: frustrate
frustrate: Frames file for 'frustrate' based on sentences in wsj. Verbnet
entry 31.1 (verbs of emotion) but there seems to be a difference
between this verb and others of that class (see note at end).
Roleset id: frustrate.01 , cause angst, vncls: 31.1, framnet:
frustrate.01: Usually for class 31.1 arg2 is the instrument, and only present when
the subject is also present. This is exceptional. It would seem
weird to introduce arg0 by 'at', and there's a real semantic
difference between the causer of frustration, and the target.
of the frustration.
Roles:
        Arg0: causer, frustrater (vnrole: 31.1-Cause)
        Arg1: entity frustrated (vnrole: 31.1-Experiencer)
        Arg2: target of frustration
Example: would this actually work?
        person: ns,  tense: ns,  aspect: ns,  voice: ns,  form: infinitive
        Sometimes, if the hacker seemed to be into a sensitive file, he-1
        would drag his keychain across the terminal *trace*-1 to create
        static or slow the system down *trace*-1 to frustrate his quarry.
        Arg0: *trace*
        Rel: frustrate
        Arg1: his quarry
Example: passive
        person: ns,  tense: present,  aspect: ns,  voice: passive,  form: participle
        [Corporate leaders]-1, frustrated *trace*-1 by double-digit increases in
        health-care costs, are beginning to sound like liberal Democrats.
        Rel: frustrated
        Arg1: *trace*
        Arg0: by double-digit increases in health-care costs
Example: exceptional use of arg2
        person: ns,  tense: present,  aspect: ns,  voice: passive,  form: participle
        But the Fed isn't enthusiastic about Treasury efforts to bring
        down the value of the dollar through intervention in
        foreign-exchange markets, and [the Treasury]-1 is frustrated *trace*-1
        at the Fed's reluctance to cut interest rates to pull down the
        dollar's value.
        Rel: frustrated
        Arg1: *trace*
        Arg2: at the Fed's reluctance to cut interest rates
to pull down the dollar's value