What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all y_3, y_3 will not listen to a song. For all y_3, if y_3 were excited, then y_3 is sleeping. There is at least one y_3 for which y_3 will sleep if and only if y_3 will listen to a song.
There is at least one y_3 for which if y_3 sleeps, then y_3 is listening to a song. There is at least one y_3 for which if y_3 listens to a song, then y_3 is sleeping. There is at least one y_3 for which y_3 will not sleep.