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 presidents thanked the manager that encouraged the judges .
The judges thanked the presidents .

The students in front of the senator contacted the manager .
The manager contacted the students .

The president that the students helped mentioned the judges .

The judges mentioned the students .