What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_5, if x_5 reads a book, then x_5 is sad. There is at least one x_5 for which x_5 will drive a car. For all x_5, if x_5 were an artist, then x_5 is reading a book. For all x_5, x_5 is a bartender or x_5 is an artist. For all x_5, if x_5 were a bartender, then x_5 is sad.
For all x_5, if x_5 were an artist, then x_5 is sad.