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: ~q_14. q_14 <-> w_2. w_2 or ~q_14. p -> w_2.
q_14 -> w_2 can be inferred via the rewriting rule. q_14 -> w_2 can be inferred via the biconditional elimination rule. w_2 -> q_14 can be inferred via the biconditional elimination rule. ~w_2 can be inferred via the biconditional elimination rule.