What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x, if x were a scientist, then x is a janitor. There is at least one x for which x is not a janitor. For all x, x is a scientist if and only if x is curious.
There is at least one x for which x is not a scientist. For all x, if x were a scientist, then x is curious. For all x, if x were curious, then x is a scientist.