Consider the following premises. exists y_3: Q(y_3) or ~W_2(y_3). forall y_3: W_4(y_3) -> W_2(y_3). Can we infer exists y_3: W_4(y_3) -> Q(y_3) from them? If possible, name the inference rules being used at each step.
 From exists y_3: Q(y_3) or ~W_2(y_3) we can infer exists y_3: W_2(y_3) -> Q(y_3) via existential rewriting. Finally, from forall y_3: W_4(y_3) -> W_2(y_3), exists y_3: W_2(y_3) -> Q(y_3) we can infer exists y_3: W_4(y_3) -> Q(y_3) via existential transitivity. Therefore, the answer is yes.