Consider the following premises. q_3 -> S_5(a_5). forall x_5: P(x_5) -> S_5(x_5). q_3 or P(a_5). Can we infer S_5(a_5) from them?
 From forall x_5: P(x_5) -> S_5(x_5) we can infer P(a_5) -> S_5(a_5). Finally, from q_3 -> S_5(a_5), P(a_5) -> S_5(a_5), q_3 or P(a_5) we can infer S_5(a_5). Therefore, the answer is yes.