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 y for which if y drinks water, then y is working. For all y, y will drink water. For all y, y will work or y will not climb a mountain.
There is at least one y for which y will work. For all y, if y climbs a mountain, then y is working.