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_9 for which x_9 is a nurse if and only if x_9 is bored. For all x_9, x_9 is bored or x_9 is not a nurse.
For all x_9, if x_9 were a nurse, then x_9 is bored. There is at least one x_9 for which if x_9 were a nurse, then x_9 is bored. There is at least one x_9 for which if x_9 were bored, then x_9 is a nurse.