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.

Ex Input:
The artist by the authors contacted the lawyers .

Ex Output:
The lawyers contacted the artist .


Ex Input:
The actors introduced the secretaries .

Ex Output:
The secretaries introduced the actors .


Ex Input:
The senators believed the doctor by the actors .

Ex Output:

The actors believed the senators .