What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_5, if x_5 were a cashier, then x_5 is a server. For all x_5, if x_5 plays tennis, then x_5 is taking a plane. For all x_5, x_5 will play tennis or x_5 is a cashier. For all x_5, x_5 is a bartender. For all x_5, if x_5 were a server, then x_5 is taking a plane.
For all x_5, if x_5 were a cashier, then x_5 is taking a plane.