Consider the following premises. forall y: U_3(y) -> Q(y). forall y: P(y) or U_3(y). P_1(d). forall y: P(y) -> Q(y). Can we infer forall y: P(y) -> Q(y) from them? If possible, name the inference rules being used at each step.
That is one of the premises. Therefore, the answer is yes.