What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_9, x_9 is a server if and only if x_9 is a police officer. For all x_9, x_9 is not a police officer. There is at least one x_9 for which x_9 is a server if and only if x_9 will work.
For all x_9, if x_9 were a server, then x_9 is a police officer. There is at least one x_9 for which if x_9 were a server, then x_9 is working. For all x_9, if x_9 were a police officer, then x_9 is a server. There is at least one x_9 for which if x_9 works, then x_9 is a server. For all x_9, x_9 is not a server.