Predicate: impound
impound: Frames file for 'impound' based on survey of sentences in the WSJ
corpus.
Roleset id: impound.01 , to hold or confine, vncls: 10.5, framnet:
Roles:
        Arg0: holder, agent (vnrole: 10.5-Agent)
        Arg1: entity impounded (vnrole: 10.5-Theme)
Example: passive
        person: ns,  tense: present,  aspect: perfect,  voice: passive,  form: participle
        [More than 300 planes and helicopters]-1 have been impounded [*-1] at airports , and a large number of vehicles and launches has been confiscated [*-2] .
        Rel: impounded
        Arg1: [*-1]
        ArgM-LOC: at airports