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 athletes admired the authors .
The authors admired the athletes .

The actors called the presidents .
The presidents called the actors .

The senators who the bankers introduced believed the president .

The bankers believed the senators .