What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? p_9 <-> t_3. r -> p_16. p_16 -> t_3. t_3 -> p_16.
r -> t_3. p_16 <-> t_3. t_3 <-> p_16. p_9 -> t_3. t_3 -> p_9.