Consider the following premises. S_16(a_16) and w_3. forall x_16: R_16(x_16) <-> S_16(x_16). Can we infer R_16(a_16) from them? If possible, name the inference rules being used at each step.
 From forall x_16: R_16(x_16) <-> S_16(x_16) we can infer R_16(a_16) <-> S_16(a_16) via universal instantiation. From R_16(a_16) <-> S_16(a_16) we can infer S_16(a_16) -> R_16(a_16) via biconditional elimination. From S_16(a_16) and w_3 we can infer S_16(a_16) via simplification. Finally, from S_16(a_16) -> R_16(a_16), S_16(a_16) we can infer R_16(a_16) via modus ponens. Therefore, the answer is yes.