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: r or q_17. t or ~q_17. p -> w. w <-> r. t -> p.
t -> w can be inferred via the transitivity rule. q_17 -> t can be inferred via the rewriting rule. w -> r can be inferred via the biconditional elimination rule. r -> w can be inferred via the biconditional elimination rule.