What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_19, x_19 will climb a mountain if and only if x_19 is a cashier. There is at least one x_19 for which x_19 is a cashier if and only if x_19 is bored. For all x_19, x_19 is not bored. For all x_19, x_19 will climb a mountain if and only if x_19 is a nurse.
For all x_19, if x_19 climbs a mountain, then x_19 is a cashier. For all x_19, if x_19 climbs a mountain, then x_19 is a nurse. There is at least one x_19 for which if x_19 were a cashier, then x_19 is bored. For all x_19, if x_19 were a cashier, then x_19 is climbing a mountain. For all x_19, if x_19 were a nurse, then x_19 is climbing a mountain. There is at least one x_19 for which if x_19 were bored, then x_19 is a cashier. There is at least one x_19 for which x_19 is not a cashier.