Predicate: slippage
Roleset id: slippage.01 , fall, vncls:
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
        some slippage in Mr. Dinkins 's support among Jewish voters
        Rel : slippage
        Arg1 : in Mr. Dinkins 's support among Jewish voters