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 doctors in front of the scientist recognized the banker .

Ex Output:
The scientist recognized the doctors .


Ex Input:
The senators who stopped the tourist avoided the artist .

Ex Output:
The tourist avoided the senators .


Ex Input:
The artists behind the banker contacted the senators .

Ex Output:

The senators contacted the artists .