What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all y, y will climb a mountain if and only if y is a soldier. For all y, y is not a soldier. If it rains, then Sarah is climbing a mountain.
For all y, if y climbs a mountain, then y is a soldier. For all y, if y were a soldier, then y is climbing a mountain. For all y, y will not climb a mountain.