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_5, if x_5 were excited, then x_5 is taking a plane. For all x_5, x_5 will drink water. For all x_5, if x_5 takes a plane, then x_5 is a nurse. For all x_5, if x_5 drinks water, then x_5 is excited.
For all x_5, x_5 is excited can be inferred via the universal modus ponens rule. For all x_5, if x_5 were excited, then x_5 is a nurse can be inferred via the universal transitivity rule. For all x_5, if x_5 drinks water, then x_5 is taking a plane can be inferred via the universal transitivity rule.