What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all z_4, z_4 will listen to a song. For all z_4, z_4 is an electrician.
For all z_4, z_4 will listen to a song and z_4 is an electrician. For all z_4, z_4 is an electrician and z_4 will listen to a song.