Predicate: drain
Roleset id: drain.01 , unfill, empty, vncls:
Roles:
        Arg0: causative agent
        Arg1: container
        Arg2: substance
Example: autogen1
        Population Drain Ends For Midwestern States
        Arg2 : Population
        Rel : Drain
        ArgSupport : Ends
        Arg1 : For Midwestern States
Example: autogen2
        too great a drain on funds
        Rel : drain
        Arg2 : on funds