What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_2, if x_2 makes tea, then x_2 is a police officer. For all x_2, if x_2 were a police officer, then x_2 is taking a plane. For all x_2, if x_2 takes a plane, then x_2 is making tea.
For all x_2, if x_2 makes tea, then x_2 is taking a plane. For all x_2, if x_2 were a police officer, then x_2 is making tea. For all x_2, if x_2 takes a plane, then x_2 is a police officer.