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, if x_7 listens to a song, then x_7 is a janitor. For all x_7, x_7 will listen to a song and x_7 is a cashier.
For all x_7, x_7 will listen to a song. For all x_7, x_7 is a cashier.