Predicate: substitute

Roleset id: substitute.01 , exchange one thing for another, vncls: 13.6

Roles:

        Arg0: agent, entity trading
        Arg1: thing being preferred, new thing
        Arg3: other item in exchange, old thing
        Arg4: beneficiary

Example: autogen1

        their own substitutes

        Arg0 : their
        Arg1 : substitutes
        Rel : substitutes

Example: autogen2

        a potential substitute for CFCs

        Arg1 : substitute
        Rel : substitute
        Arg3 : for CFCs