Consider the following premises. exists x_18: Q_18(x_18) <-> T_2(x_18). forall x_18: R_18(x_18) -> T_2(x_18). forall x_18: Q_1(x_18). forall x_18: P_18(x_18) or Q_18(x_18). forall x_18: ~P_18(x_18) or R_18(x_18). Can we infer forall x_18: R_18(x_18) -> T_2(x_18) from them?
That is one of the premises. Therefore, the answer is yes.