Predicate: plunging
Roleset id: plunging.01 , fall precipitously, vncls: 45.6
Roles:
        Arg1: logical subject, patient, thing falling
        Arg2: ext, amount fallen
        Arg3: start point
        Arg4: end point, end state of arg1
        ArgM: medium
Example: autogen1
        the rearing and plunging of stock prices Tuesday after the
        proposed buy-out of UAL Corp. once again collapsed
        Rel : plunging
        Arg1 : of stock prices
        ArgM-TMP : Tuesday