What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? t -> w_4. p_16 -> t. s -> p_16. w_4 -> s. t -> p_16.
t -> s. p_16 -> w_4. s -> t. w_4 -> p_16. p_16 <-> t. t <-> p_16.