Consider the following premises. forall x_17: S(x_17) -> S_17(x_17). u -> S(h). u or ~S_17(h). Can we infer S(h) -> u from them?
 From forall x_17: S(x_17) -> S_17(x_17) we can infer S(h) -> S_17(h). From u or ~S_17(h) we can infer S_17(h) -> u. Finally, from S(h) -> S_17(h), S_17(h) -> u we can infer S(h) -> u. Therefore, the answer is yes.