What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_3, if x_3 takes a plane, then x_3 is fast. There is at least one x_3 for which x_3 is an artist or x_3 is not fast.
There is at least one x_3 for which if x_3 were fast, then x_3 is an artist.