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: Susan is drinking water. For all x, if x makes tea, then x is driving a car. For all x, if x sleeps, then x is driving a car. For all x, x will sleep or x will make tea.
There is at least one x for which x will drink water can be inferred via the existential generalization rule. For all x, x will drive a car can be inferred via the universal disjunction elimination rule.