What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_7, x_7 will sleep if and only if x_7 is poor. For all x_7, x_7 will sleep. For all x_7, if x_7 were poor, then x_7 is working.
For all x_7, if x_7 sleeps, then x_7 is poor. For all x_7, if x_7 were poor, then x_7 is sleeping.