Consider the following premises. exists x_7: P_3(x_7) or ~U_1(x_7). forall x_7: U_1(x_7) or ~W(x_7). Can we infer forall x_7: U_1(x_7) or ~W(x_7) from them? If possible, name the inference rules being used at each step.
That is one of the premises. Therefore, the answer is yes.