What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_8, x_8 will sleep if and only if x_8 is a sailor. There is at least one x_8 for which x_8 is a sailor if and only if x_8 will sleep.
For all x_8, if x_8 sleeps, then x_8 is a sailor. There is at least one x_8 for which if x_8 were a sailor, then x_8 is sleeping. For all x_8, if x_8 were a sailor, then x_8 is sleeping. There is at least one x_8 for which if x_8 sleeps, then x_8 is a sailor.