Consider the following premises. forall x_11: Q_7(x_11) -> R_4(x_11). forall x_11: ~P_7(x_11) or R_6(x_11). forall x_11: R_6(x_11) -> R_4(x_11). forall x_11: P_7(x_11). forall x_11: Q(x_11) and Q_11(x_11). Can we infer forall x_11: Q_7(x_11) -> R_4(x_11) from them? If possible, name the inference rules being used at each step.
That is one of the premises. Therefore, the answer is yes.