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(e). forall x_2: Q(x_2) <-> W_3(x_2). q.
~Q(e) and q can be inferred via the conjunction rule. q and ~Q(e) can be inferred via the conjunction rule. forall x_2: Q(x_2) -> W_3(x_2) can be inferred via the universal biconditional elimination rule. forall x_2: W_3(x_2) -> Q(x_2) can be inferred via the universal biconditional elimination rule.