What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_4, x_4 is not an artist. For all x_4, if x_4 were an artist, then x_4 is sleeping. For all x_4, if x_4 sleeps, then x_4 is poor. For all x_4, if x_4 were poor, then x_4 is an artist.
For all x_4, x_4 is not poor. For all x_4, if x_4 were an artist, then x_4 is poor. For all x_4, if x_4 sleeps, then x_4 is an artist. For all x_4, if x_4 were poor, then x_4 is sleeping.