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_1 for which if z_1 were a server, then z_1 is a scientist. For all z_1, if z_1 listens to a song, then z_1 is a server. For all z_1, if z_1 were a scientist, then z_1 is cooking. For all z_1, if z_1 cooks, then z_1 is listening to a song.
For all z_1, if z_1 were a scientist, then z_1 is listening to a song. For all z_1, if z_1 cooks, then z_1 is a server. There is at least one z_1 for which if z_1 were a server, then z_1 is cooking. There is at least one z_1 for which if z_1 listens to a song, then z_1 is a scientist.