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: t_1. ~p_3. p_3 <-> q_1. ~t_1 or w_2.
t_1 and ~p_3 can be inferred via the conjunction rule. ~p_3 and t_1 can be inferred via the conjunction rule. p_3 -> q_1 can be inferred via the biconditional elimination rule. q_1 -> p_3 can be inferred via the biconditional elimination rule. ~q_1 can be inferred via the biconditional elimination rule.