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: There is at least one x_13 for which if x_13 were excited, then x_13 is cooking. For all x_13, x_13 will go running. For all x_13, x_13 will not play tennis. For all x_13, x_13 will play tennis or x_13 is excited.
For all x_13, x_13 is excited can be inferred via the universal disjunctive syllogism rule.