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_5 -> q. ~t. p_5 or r. t <-> q.
t -> q can be inferred via the biconditional elimination rule. q -> t can be inferred via the biconditional elimination rule. ~q can be inferred via the biconditional elimination rule.