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: s_1 <-> q_3. ~q_3.
s_1 -> q_3 can be inferred via the biconditional elimination rule. q_3 -> s_1 can be inferred via the biconditional elimination rule. ~s_1 can be inferred via the biconditional elimination rule.