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_7 for which x_7 is a police officer or x_7 will not listen to a song. For all x_7, x_7 will not work. For all x_7, x_7 will work or x_7 will listen to a song.
For all x_7, x_7 will listen to a song. There is at least one x_7 for which if x_7 listens to a song, then x_7 is a police officer.