What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all z_1, z_1 is a nurse or z_1 will not climb a mountain. Mary is climbing a mountain. If Mary were a nurse, then Patricia is bored.
There is at least one x for which x will climb a mountain. For all z_1, if z_1 climbs a mountain, then z_1 is a nurse.