What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? There is at least one x_4 for which x_4 is a bartender or x_4 will listen to a song. For all x_4, x_4 is an artist. For all x_4, x_4 is not a bartender.
There is at least one x_4 for which x_4 will listen to a song.