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_4 -> q_10. p. ~w_4. q_10 -> w_4.
~q_10 can be inferred via the modus tollens rule. p and ~w_4 can be inferred via the conjunction rule. ~w_4 and p can be inferred via the conjunction rule. w_4 <-> q_10 can be inferred via the biconditional introduction rule. q_10 <-> w_4 can be inferred via the biconditional introduction rule.