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_8, x_8 will not sleep. For all x_8, x_8 is a politician or x_8 will sleep. For all x_8, x_8 is not a politician or x_8 will drive a car. For all x_8, x_8 will not drive a car or x_8 will climb a mountain.
For all x_8, x_8 will sleep or x_8 will drive a car can be inferred via the universal resolution rule.