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 <-> p. p or q_2. t or ~q_2.
q_2 -> t can be inferred via the rewriting rule. t -> p can be inferred via the biconditional elimination rule. p -> t can be inferred via the biconditional elimination rule.