Consider the following premises. forall x_9: Q_9(x_9) -> W(x_9). exists x_9: R(x_9) or Q_9(x_9). forall x_9: R(x_9) -> W(x_9). forall x_9: S_3(x_9). Can we infer exists x_9: S_3(x_9) and W(x_9) from them?
 From forall x_9: R(x_9) -> W(x_9), forall x_9: Q_9(x_9) -> W(x_9), exists x_9: R(x_9) or Q_9(x_9) we can infer exists x_9: W(x_9). Finally, from forall x_9: S_3(x_9), exists x_9: W(x_9) we can infer exists x_9: S_3(x_9) and W(x_9). Therefore, the answer is yes.