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: p_2 <-> w. w_2. p_2 -> ~t. w_2 -> t.
t can be inferred via the modus ponens rule. p_2 -> w can be inferred via the biconditional elimination rule. w -> p_2 can be inferred via the biconditional elimination rule.