What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_12, if x_12 were a cashier, then x_12 is climbing a mountain. For all x_12, x_12 will go running if and only if x_12 will climb a mountain. There is at least one x_12 for which x_12 is a cashier or x_12 will go running. For all x_12, x_12 will drink water.
For all x_12, if x_12 goes running, then x_12 is climbing a mountain. For all x_12, if x_12 climbs a mountain, then x_12 is running.