Consider the following premises. w -> R_17(a_17). q -> w. ~S_17(a_17). forall x_17: R_17(x_17) -> S_17(x_17). S_17(a_17) -> R_17(a_17). Can we infer q from them? If possible, name the inference rules being used at each step.
 From forall x_17: R_17(x_17) -> S_17(x_17) we can infer R_17(a_17) -> S_17(a_17) via universal instantiation. From S_17(a_17) -> R_17(a_17), R_17(a_17) -> S_17(a_17) we can infer S_17(a_17) <-> R_17(a_17) via biconditional introduction. From q -> w, w -> R_17(a_17) we can infer q -> R_17(a_17) via transitivity. From S_17(a_17) <-> R_17(a_17), ~S_17(a_17) we can infer ~R_17(a_17) via biconditional elimination. Finally, from q -> R_17(a_17), ~R_17(a_17) we can infer ~q via modus tollens, which contradicts q. Therefore, the answer is no.