Predicate: erasure

Roleset id: erasure.01 , remove marks, vncls: 10.4.1

Roles:

        Arg0: eraser
        Arg1: thing erased, mark
        Arg2: medium, surface
        Arg3: instrument, if separate from arg0

Example: autogen1

        adult responsibility for erasures at 40 schools that changed
        wrong answers to right ones on a statewide test

        Arg0 : adult
        ArgSupport : responsibility for
        Rel : erasures
        ArgM-LOC : at 40 schools