What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? There is at least one x_10 for which x_10 is not a police officer. For all x_10, x_10 is a police officer if and only if x_10 will sleep. For all x_10, x_10 will sleep or x_10 is not fast.
For all x_10, if x_10 were fast, then x_10 is sleeping. For all x_10, if x_10 were a police officer, then x_10 is sleeping. For all x_10, if x_10 sleeps, then x_10 is a police officer. There is at least one x_10 for which x_10 will not sleep.