What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? q_2. w. p_13 -> q_10. p_13 -> ~w. q_10 -> p_13.
~p_13. q_10 -> ~w. q_2 and w. w and q_2. p_13 <-> q_10. q_10 <-> p_13.