What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Name the inference rule being used: w_3. forall x_16: ~R_16(x_16). R_16(a_16) <-> q_9.
R_16(a_16) -> q_9 can be inferred via the biconditional elimination rule. q_9 -> R_16(a_16) can be inferred via the biconditional elimination rule.