Predicate: unburden

Frames file for 'unburden' based on ebn instances.

Roleset id: unburden.01 , remove a load, vncls: 13.4.2

Roles:

        Arg0: unloader
        Arg1: carrier
        Arg2: load

Example: feel better

        *PRO* unburden yourself.

        Arg0 : *PRO*
        Rel : unburden
        Arg1 : yourself