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_11, x_11 is bored or x_11 will write a letter. For all x_11, if x_11 drinks water, then x_11 is driving a car. For all x_11, x_11 will drink water or x_11 is a bartender. For all x_11, x_11 is not bored. For all x_11, if x_11 were a bartender, then x_11 is driving a car.
For all x_11, x_11 will write a letter can be inferred via the universal disjunctive syllogism rule. For all x_11, x_11 will drive a car can be inferred via the universal disjunction elimination rule.