What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all z_3, if z_3 cooks, then z_3 is working. For all z_3, if z_3 sleeps, then z_3 is cooking. For all z_3, if z_3 works, then z_3 is sleeping. For all z_3, if z_3 sleeps, then z_3 is working.
For all z_3, if z_3 cooks, then z_3 is sleeping. For all z_3, if z_3 sleeps, then z_3 is working. For all z_3, if z_3 works, then z_3 is cooking. For all z_3, z_3 will work if and only if z_3 will sleep. For all z_3, z_3 will sleep if and only if z_3 will work.