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: forall x_7: U(x_7) <-> T(x_7). forall x_7: ~Q_4(x_7). forall x_7: T(x_7) <-> Q_4(x_7).
forall x_7: U(x_7) -> T(x_7) can be inferred via the universal biconditional elimination rule. forall x_7: T(x_7) -> Q_4(x_7) can be inferred via the universal biconditional elimination rule. forall x_7: T(x_7) -> U(x_7) can be inferred via the universal biconditional elimination rule. forall x_7: Q_4(x_7) -> T(x_7) can be inferred via the universal biconditional elimination rule. forall x_7: ~T(x_7) can be inferred via the universal biconditional elimination rule.