Predicate: widening
Roleset id: widening.01 , make wider, vncls: 45.4
Roles:
        Arg0: causal agent
        Arg1: thing becoming wider
        Arg2: ext
        Arg3: start point
        Arg4: end point
Example: autogen1
        A widening of the deficit
        Rel : widening
        Arg1 : of the deficit
Example: autogen2
        A widening of that magnitude
        Rel : widening
        Arg2 : of that magnitude