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, if x_8 were a cashier, then x_8 is a writer. For all x_8, x_8 is not a writer. For all x_8, x_8 is a cashier if and only if x_8 is bored.
For all x_8, x_8 is not a cashier. For all x_8, if x_8 were a cashier, then x_8 is bored. For all x_8, if x_8 were bored, then x_8 is a cashier.