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 lawyer that believed the presidents thanked the actors .

Ex Output:
The actors thanked the lawyer .


Ex Input:
The banker in front of the secretaries thanked the professors .

Ex Output:
The professors thanked the secretaries .


Ex Input:
The scientists helped the author .

Ex Output:

The author helped the scientists .