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 a cashier, then z_4 is sleeping. For all z_4, if z_4 were a writer, then z_4 is a cashier. There is at least one z_4 for which if z_4 sleeps, then z_4 is a lawyer. For all z_4, if z_4 were a lawyer, then z_4 is a writer.
For all z_4, if z_4 were a writer, then z_4 is sleeping. For all z_4, if z_4 were a lawyer, then z_4 is a cashier. There is at least one z_4 for which if z_4 sleeps, then z_4 is a writer. There is at least one z_4 for which if z_4 were a cashier, then z_4 is a lawyer.