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_19, if x_19 plays tennis, then x_19 is drinking water. For all x_19, if x_19 were a musician, then x_19 is sleeping. For all x_19, x_19 is not excited. For all x_19, x_19 will drive a car or x_19 will play tennis. There is at least one x_19 for which x_19 is excited or x_19 is a musician. For all x_19, if x_19 drives a car, then x_19 is drinking water.
There is at least one x_19 for which x_19 is a musician can be inferred via the existential disjunctive syllogism rule. For all x_19, x_19 will drink water can be inferred via the universal disjunction elimination rule.