What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all z_4, if z_4 were excited, then z_4 is bored. For all z_4, if z_4 were bored, then z_4 is sleeping. For all z_4, z_4 is excited or z_4 will not sleep.
For all z_4, if z_4 were excited, then z_4 is sleeping. For all z_4, if z_4 sleeps, then z_4 is excited.