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 is an artist if and only if x_7 will take a plane. For all x_7, if x_7 sleeps, then x_7 is taking a plane. For all x_7, x_7 will sleep or x_7 is an artist.
For all x_7, if x_7 were an artist, then x_7 is taking a plane. For all x_7, if x_7 takes a plane, then x_7 is an artist.