Consider the following premises. t -> R_10(a_10). forall x_10: R_10(x_10) -> S_10(x_10). S_10(a_10) -> s. Can we infer t -> s from them? If possible, name the inference rules being used at each step.
 From forall x_10: R_10(x_10) -> S_10(x_10) we can infer R_10(a_10) -> S_10(a_10) via universal instantiation. From R_10(a_10) -> S_10(a_10), S_10(a_10) -> s we can infer R_10(a_10) -> s via transitivity. Finally, from t -> R_10(a_10), R_10(a_10) -> s we can infer t -> s via transitivity. Therefore, the answer is yes.