Consider the following premises. forall x_12: Q_5(x_12) -> R_4(x_12). forall x_12: P_5(x_12). forall x_12: P_5(x_12) -> R_4(x_12). exists x_12: U_4(x_12) and Q_12(x_12). Can we infer forall x_12: Q_5(x_12) -> R_4(x_12) from them?
That is one of the premises. Therefore, the answer is yes.