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 works, then x_5 is a police officer. There is at least one x_5 for which if x_5 were a police officer, then x_5 is a cashier. For all x_5, if x_5 were a police officer, then x_5 is working.
There is at least one x_5 for which if x_5 works, then x_5 is a cashier. For all x_5, x_5 will work if and only if x_5 is a police officer. For all x_5, x_5 is a police officer if and only if x_5 will work.