Consider the following premises. S_9(h_3) -> T_3(h_3). ~S_9(h_3). forall x_9: T_3(x_9) <-> S_9(x_9). Can we infer T_3(h_3) from them? If possible, name the inference rules being used at each step.
 From forall x_9: T_3(x_9) <-> S_9(x_9) we can infer T_3(h_3) <-> S_9(h_3) via universal instantiation. From T_3(h_3) <-> S_9(h_3) we can infer T_3(h_3) -> S_9(h_3) via biconditional elimination. From S_9(h_3) -> T_3(h_3), T_3(h_3) -> S_9(h_3) we can infer S_9(h_3) <-> T_3(h_3) via biconditional introduction. Finally, from S_9(h_3) <-> T_3(h_3), ~S_9(h_3) we can infer ~T_3(h_3) via biconditional elimination, which contradicts T_3(h_3). Therefore, the answer is no.