What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all y, if y were rich, then y is a doctor. For all y, y is rich. For all y, if y were a doctor, then y is a scientist. For all y, y is an electrician.
For all y, y is a doctor. For all y, if y were rich, then y is a scientist. For all y, y is rich and y is an electrician. For all y, y is an electrician and y is rich.