There are no adjectives in the sentence. Usher is a singer, making that a proper noun. Juggles is a action verb. Tennis Balls is a compound noun.
The thesis is <span>a statement or theory that is put forward as a premise to be maintained or proved.</span>
One example of dramatic irony is when the people on the shore see the boat out at sea. They believe that it is a novelty, not that someone might need their help. The people in the boat, see the people on the shore as their rescuers. Both are wrong.