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 x_2 for which if x_2 were curious, then x_2 is a janitor. For all x_2, if x_2 were a janitor, then x_2 is a nurse. For all x_2, if x_2 were a nurse, then x_2 is curious.
For all x_2, if x_2 were a janitor, then x_2 is curious. There is at least one x_2 for which if x_2 were curious, then x_2 is a nurse. There is at least one x_2 for which if x_2 were a nurse, then x_2 is a janitor.