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_10, if x_10 drinks water, then x_10 is sleeping. For all x_10, if x_10 were a soldier, then x_10 is playing tennis. For all x_10, if x_10 makes tea, then x_10 is drinking water. For all x_10, if x_10 sleeps, then x_10 is a soldier. There is at least one x_10 for which if x_10 reads a book, then x_10 is making tea.
For all x_10, if x_10 drinks water, then x_10 is a soldier can be inferred via the universal transitivity rule. For all x_10, if x_10 makes tea, then x_10 is sleeping can be inferred via the universal transitivity rule. For all x_10, if x_10 sleeps, then x_10 is playing tennis can be inferred via the universal transitivity rule. There is at least one x_10 for which if x_10 reads a book, then x_10 is drinking water can be inferred via the existential transitivity rule.