What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_15, x_15 will climb a mountain or x_15 is a lawyer. For all x_15, x_15 will work if and only if x_15 will climb a mountain. There is at least one x_15 for which x_15 will not work. For all x_15, if x_15 plays a game, then x_15 is not a lawyer.
For all x_15, if x_15 works, then x_15 is climbing a mountain. For all x_15, if x_15 climbs a mountain, then x_15 is working. There is at least one x_15 for which x_15 will not climb a mountain.