Consider the following premises. q. forall z: R(z) or W(z). forall z: ~R(z). Can we infer q and W(g_4) from them? If possible, name the inference rules being used at each step.
 From forall z: R(z) or W(z), forall z: ~R(z) we can infer forall z: W(z) via universal disjunctive syllogism. From forall z: W(z) we can infer W(g_4) via universal instantiation. Finally, from q, W(g_4) we can infer q and W(g_4) via conjunction. Therefore, the answer is yes.