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