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_12, x_12 is an astronaut and x_12 will make tea.
For all x_12, x_12 is an astronaut can be inferred via the universal simplification rule. For all x_12, x_12 will make tea can be inferred via the universal simplification rule.