Consider the following premises. forall x_5: ~Q_5(x_5) or R_2(x_5). forall x_5: ~P_5(x_5) or P(x_5). forall x_5: P_5(x_5). forall x_5: ~P(x_5) or R(x_5). Can we infer forall x_5: ~P(x_5) or R(x_5) from them? If possible, name the inference rules being used at each step.
That is one of the premises. Therefore, the answer is yes.