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_1, x_1 will not drink water. For all x_1, if x_1 makes tea, then x_1 is an astronaut. For all x_1, if x_1 were an astronaut, then x_1 is drinking water.
For all x_1, x_1 is not an astronaut can be inferred via the universal modus tollens rule. For all x_1, if x_1 makes tea, then x_1 is drinking water can be inferred via the universal transitivity rule.