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 bankers who the actor saw contacted the tourists .
The tourists contacted the actor .

The student admired the authors .
The authors admired the student .

The secretary stopped the scientists who recognized the professors .

The professors stopped the secretary .