Predicate: unclog
Roleset id: unclog.01 , Remove an obstruction to a passage, vncls: , framnet:
Roles:
        Arg0: Agent
        Arg1: Passage
        Arg2: Substance previously blocking passage
Example: Arg0, 1, with MNR
        person: ns,  tense: ns,  aspect: ns,  voice: ns,  form: ns
        The plumber unclogged the sink with a drain snake.
        Arg0: The plumber
        Rel: unclogged
        Arg1: the sink
        Argm-mnr: with a drain snake