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: If it is cold, then it is overcast. If William goes running, then it is cold. If John plays tennis, then William is driving a car. For all x_2, if x_2 drives a car, then x_2 is running.
If William goes running, then it is overcast can be inferred via the transitivity rule.