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: For all x_14, if x_14 were fast, then x_14 is driving a car. There is at least one x_14 for which x_14 will make tea or x_14 will play squash. For all x_14, if x_14 makes tea, then x_14 is fast. For all x_14, x_14 will not drive a car.
For all x_14, x_14 is not fast can be inferred via the universal modus tollens rule. For all x_14, if x_14 makes tea, then x_14 is driving a car can be inferred via the universal transitivity rule.