What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_9, if x_9 works, then x_9 is listening to a song. For all x_9, x_9 will not work. For all x_9, if x_9 listens to a song, then x_9 is working. For all x_9, if x_9 sleeps, then x_9 is making tea. For all x_9, if x_9 makes tea, then x_9 is listening to a song.
For all x_9, x_9 will not listen to a song. For all x_9, if x_9 sleeps, then x_9 is listening to a song. For all x_9, if x_9 makes tea, then x_9 is working. For all x_9, x_9 will work if and only if x_9 will listen to a song. For all x_9, x_9 will listen to a song if and only if x_9 will work.