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 musician, then z is making tea. For all z, if z makes tea, then z is a cashier. For all z, z will not make tea. For all z, if z were a cashier, then z is a musician.
There is at least one z for which z is not a musician. For all z, if z makes tea, then z is a musician. There is at least one z for which if z were a musician, then z is a cashier. There is at least one z for which if z were a cashier, then z is making tea.