Predicate: narrowing
Roleset id: narrowing.01 , make narrower, vncls: 45.4
Roles:
        Arg0: causal agent
        Arg1: thing becoming narrower
        Arg2: ext, amount narrowed by
        Arg3: start point
        Arg4: end point
Example: autogen1
        a 47 % narrowing in its trade surplus with the U.S.
        Arg2 : 47 %
        Rel : narrowing
        Arg1 : in its trade surplus with the U.S.
Example: autogen2
        the narrowing in the nation 's trade gap reflected in successive
        full monthly reports
        Rel : narrowing
        Arg1 : in the nation 's trade gap