grading by the Autograder system. We will prove the simplest proposition we have seen VP: Prop, P = P. You will prepare a text file named ChPropositionalLogic.v which contains the statement and tactics for the proof. You must name the lemma identity Lemma identity : forall P : Prop, P -> P. Proof intros PP exact P. Qed. grading by the Autograder system. We will prove the simplest proposition we have seen VP: Prop, P = P. You will prepare a text file named ChPropositionalLogic.v which contains the statement and tactics for the proof. You must name the lemma identity Lemma identity : forall P : Prop, P -> P. Proof intros PP exact P. Qed