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, if x plays a game, then x is making tea. For all x, x will play a game or x is an electrician. For all x, if x makes tea, then x is running. There is at least one x for which x is excited. For all x, if x were an electrician, then x is running.
For all x, if x plays a game, then x is running can be inferred via the universal transitivity rule.