What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all z, z is a cashier. For all z, z will listen to a song. There is at least one z for which z is an electrician or z is a carpenter. For all z, z is not an electrician.
There is at least one z for which z is a carpenter. For all z, z is a cashier and z will listen to a song. For all z, z will listen to a song and z is a cashier.