What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_11, x_11 is not sad. For all x_11, x_11 is rich or x_11 is not a nurse. There is at least one x_11 for which x_11 is sad or x_11 is a nurse.
There is at least one x_11 for which x_11 is a nurse. For all x_11, if x_11 were a nurse, then x_11 is rich.