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 z for which if z were a writer, then z is listening to a song. For all z, if z were a lawyer, then z is a writer. For all z, z is a lawyer or z will not listen to a song.
There is at least one z for which if z were a lawyer, then z is listening to a song. For all z, if z listens to a song, then z is a lawyer.