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 lawyers who the scientists encouraged introduced the senators .
The senators introduced the scientists .

The author advised the secretary that supported the artists .
The artists advised the author .

The lawyers helped the tourist who thanked the senators .

The tourist helped the the senators .