(p (q r)) ((p q) (p r))

(p (q r)) ((pq) (p r))

Liar paradox sentence cannot be true and cannot be false. That is why it is called a paradox. Prove this fact by Contradiction. Assume that Liar Paradox sentence is true, show that it leads to the conclusion that it is false. Assume, that it is false, show that this assumption leads to the conclusion that it is true.

Warning: Do not use an online system to answer these questions, I know the last "expert" cheesed it and I won't tolerate laziness. Please write on a piece of paper, and if you can explain your reasoning it would be appreciated.