In this task, you are given a premise sentence. Your task is to write a new sentence by substituting the subject and object (i.e., the input's subject should be output's object and vice versa.). The generated sentence must be fluent and shouldn't change the voice (i.e., passive or active) of the input.

The banker stopped the actors .
The actors stopped the banker .

The banker encouraged the scientist .
The scientist encouraged the banker .

The managers stopped the senators .

The senators stopped the managers .