What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_7, x_7 will climb a mountain if and only if x_7 is rich. There is at least one x_7 for which x_7 will climb a mountain or x_7 is not rich.
There is at least one x_7 for which if x_7 were rich, then x_7 is climbing a mountain. For all x_7, if x_7 climbs a mountain, then x_7 is rich. For all x_7, if x_7 were rich, then x_7 is climbing a mountain.