Consider the following premises. forall x_2: R_2(x_2) and S_2(x_2). Can we infer R_2(a_2) from them? If possible, name the inference rules being used at each step.
 From forall x_2: R_2(x_2) and S_2(x_2) we can infer R_2(a_2) and S_2(a_2) via universal instantiation. Finally, from R_2(a_2) and S_2(a_2) we can infer R_2(a_2) via simplification. Therefore, the answer is yes.