The gardener watered the owner's rose because he paid him for that.

Who is "he" in this prior sentence?
the owner
The Disney characters at Disney World entertain the audience since they are paying good money to having an enjoyable experience.

Who is "they" in this prior sentence?
the audience
The Backstreet Boys were much more popular than N-Sync since they were not very good overall.

Who is "they" in this prior sentence?

N-Sync