What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? If Sarah were a cashier, then it is late. It is late if and only if Michael is listening to a song. It is not sunny. It is sunny if and only if Michael is listening to a song.
If it is late, then Michael is listening to a song. If it is sunny, then Michael is listening to a song. If Michael listens to a song, then it is late. If Michael listens to a song, then it is sunny. Michael is not listening to a song.