Consider the following premises. forall x_15: P_15(x_15) or Q_15(x_15). forall x_15: Q_15(x_15) -> S(x_15). forall x_15: ~P_15(x_15). Can we infer S(d) or w from them?
 From forall x_15: P_15(x_15) or Q_15(x_15), forall x_15: ~P_15(x_15) we can infer forall x_15: Q_15(x_15). From forall x_15: Q_15(x_15) -> S(x_15), forall x_15: Q_15(x_15) we can infer forall x_15: S(x_15). From forall x_15: S(x_15) we can infer S(d). Finally, from S(d) we can infer S(d) or w. Therefore, the answer is yes.