What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_8, x_8 will drink water if and only if x_8 will work. For all x_8, if x_8 were a cashier, then x_8 is working. For all x_8, if x_8 climbs a mountain, then x_8 is drinking water. There is at least one x_8 for which x_8 is a cashier or x_8 will climb a mountain.
For all x_8, if x_8 drinks water, then x_8 is working. For all x_8, if x_8 works, then x_8 is drinking water.