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: ~q_8. p -> q. q <-> q_8.
q -> q_8 can be inferred via the biconditional elimination rule. q_8 -> q can be inferred via the biconditional elimination rule. ~q can be inferred via the biconditional elimination rule.