What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? ~t_1 or r_7. p_11 <-> q_11. q_11 or ~r_7. t_1 or p_11.
p_11 or r_7. r_7 -> q_11. p_11 -> q_11. q_11 -> p_11.