Consider the following premises. q_1 -> S_8(a_8). forall x_8: R_8(x_8) -> S_8(x_8). R_8(a_8). Can we infer S_8(a_8) from them? If possible, name the inference rules being used at each step.
 From forall x_8: R_8(x_8) -> S_8(x_8) we can infer R_8(a_8) -> S_8(a_8) via universal instantiation. From R_8(a_8) we can infer R_8(a_8) or q_1 via addition. Finally, from R_8(a_8) -> S_8(a_8), q_1 -> S_8(a_8), R_8(a_8) or q_1 we can infer S_8(a_8) via disjunction elimination. Therefore, the answer is yes.