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 -> q_10. q_10 -> p_10. p_10 <-> q_10.
w -> p_10 can be inferred via the transitivity rule. p_10 -> q_10 can be inferred via the biconditional elimination rule. q_10 -> p_10 can be inferred via the biconditional elimination rule.