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 tourist encouraged the artist .
The artist encouraged the tourist .

The banker contacted the actors who the judges stopped .
The actors contacted the banker .

The scientists that the actors called introduced the manager .

The actors introduced the scientists .